Membrane switch assembly font
Latest Litton Business Telephone Systems, Inc. Patents:
- Subset switching means in apparatus for a key telephone system for enabling intercom substations to access trunk lines
- Apparatus for a key telephone system for enabling intercom substations to access trunk lines
- Apparatus for a key telephone system for enabling intercom substations to access trunk lines
- Toll restrictor for touch type digit selector
- Toll restrictor for touch type digit selector
Description
FIG. 1 is a top plan view of a membrane switch assembly font showing my new design; and
FIG. 2 is a side elevation thereof.
The undisclosed bottom portion of the apertured membrane switch assembly font is plane and unornamented.
Referenced Cited
U.S. Patent Documents
| D221282 | July 1971 | Miller et al. |
| 3243517 | March 1966 | Miller et al. |
| 3286040 | November 1966 | Andregg et al. |
| 3676607 | July 1972 | Nash et al. |
Patent History
Patent number: D242930
Type: Grant
Filed: Nov 12, 1975
Date of Patent: Jan 4, 1977
Assignee: Litton Business Telephone Systems, Inc. (Sunnyvale, CA)
Inventors: Joseph Monroe Jackson (Menlo Park, CA), Shai Ronen (Menlo Park, CA)
Primary Examiner: Bernard Ansher
Attorney: Ronald M. Goldman
Application Number: 5/631,372
Type: Grant
Filed: Nov 12, 1975
Date of Patent: Jan 4, 1977
Assignee: Litton Business Telephone Systems, Inc. (Sunnyvale, CA)
Inventors: Joseph Monroe Jackson (Menlo Park, CA), Shai Ronen (Menlo Park, CA)
Primary Examiner: Bernard Ansher
Attorney: Ronald M. Goldman
Application Number: 5/631,372
Classifications
Current U.S. Class:
D26/14A
International Classification: D1403;
International Classification: D1403;
