General Information

Serial #

4,937,877

Part Number

1

Total Parts

1

AKA

Plaque

Patents

N/A

General Description

Wood-fibre board with a paper (possible) image mounted on the proper front

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

28.3 cm

Width

22.1 cm

Height

1.2 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Communications

Category

Archives

Sub-Category

N/A

Manufacturer

AKA

Patent Office US

Country

United States of America

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Ontario

Period

ca. 1990-1998

Canada

Bell Northern Research, was the research and development subsidiary of Northern Telecom (later Nortel Networks) and Bell Canada. It was built by Northern Telecom at its Trans-Canada plant in Montreal. Northern Telecom and its predecessor, Northern Electric, was for decades Canada’s largest manufacturer of telecommunications equipment. Originally a subsidiary of the AT&T-owned Western Electric, for which it manufactured American-designed products for the Canadian market, Northern Electric became Canadian-owned in the 1950s and in the 1960s began to design and produce equipment to meet the distinctive needs of Canadian telecommunication companies. In the 1970s, through its new research subsidiary, Bell Northern Research, the company made a concerted shift from conventional analogue equipment into the emerging field of digital communications, becoming in the 1980s the first equipment supplier to provide a complete line of fully digital switching and transmission gear. During this decade the company moved aggressively into export markets, and opened manufacturing and R&D operations in several countries. The company’s sales soared during the internet boom of the 1990s, but a combination of poor financial decisions and a failure to maintain its technological edge led eventually to its bankruptcy in 2009. The original Bell Northern facilities were designed with cutting edge telecommunications research and development in mind with the first three buildings on the campus featuring laboratories, an extensive research library, and an anechoic chamber. The anechoic chamber was the focal point of the Bell Northern Research acoustics research examining both the technology and placement of speakers and microphones in telecommunication devices. The anechoic chamber group was organized under the Industrial Design and working together with design were responsible for the development of the acoustic properties of most products. (From the Acquisition Proposal, see Ref. 1)

Function

Used to protect and stake claim to a particular technology. (From the Acquisition Proposal, see Ref. 1)

Technical

Unknown

Area Notes

Unknown

Details

Markings

On the proper front: "United States Patent [19]/ [11] Patent Number: 4,937,877/ Pocock et al./ [45] Date of Patent: Jun. 26, 1990/ [54] MODULATE MICROPHONE ASSEMBLY/ [75] Inventors: Mark W. Pocock; Bradley P. Basnett,/ both of Ottawa; Michael K./ Eldershaw, Nepean; Peter Fatovic,/ Ottawa; Jacques Gagnon, Kanata;/ Nahum Goldmann, Nepean; Conrad/ D. Lafrance, Aylmer; Anthony J./ Langenberg, Kanata; W. John/ McKeen, Ottawa, all of Canada/ [73] Assignee: Northern Telecom Limited, Montreal,/ Canada/ [21] Appl. No.: 244,155/ [22] Filed: Sep. 14, 1988/ [30] Foreign Application Priority Data"/ Various U.S. and foreign patent documents cited and listed/ "Primary Examiner - Jin F. Ng/ Assistant Examiner - danita R. Byrd/ Attorney, Agent or Firm - Michael M. Sakovich/ [57] ABSTRACT/ A modular microphone assembly housed in a handsfree/ telephone apparatus provides an environment that is/ isolated from a loudspeaker installed within the appara-/ tus and through which environment the directional and/ frequency response characteristics of a directional mi-/ crophone capsule contained within a closable cavity of/ a microphone mounting receptacle in the assembly are/ altered via a predetermined internal surface configura-/ tion of the receptacle to improve the performance of the/ apparatus./ 20 Claims, 5 Drawing Sheets"/ Below is a diagram labelled with several numbers./ On the proper back, in pencil: "68843"/ The "4" seems to be written over a previously written "5"

Missing

Appears complete

Finish

Plaque has a white proper front with black text and diagram, black edges, and a brown proper back.

Decoration

N/A