Inventor
David M. Weigand
Inventor
West Chester, PA, US
Overview
Patents· 2 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Qprimary
H04QSelecting50%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests50%
PatentTitleYear
4,105,871'Electronic telephone system featuring a customer memory within a central control unit connected by bus lines'19784,105,874'Centrally controlled electronic telephone system having a customer memory for storing information on two or more different subscriber stations and peripheral equipment-specific information'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978Patents assigned to SIEMENS AG (2)· patent assignee history
1978Based in West Chester, PA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SIEMENS AG | 2 | 1978 |
Locations
| Location | Patents | Span |
|---|---|---|
| West Chester, Pennsylvania, US | 2 | 1978 |