Inventor
Douglas H. Patterson
Inventor
Norwalk, CT, US
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G07Bprimary
G07BTicket-issuing apparatus33%
G07CTime or attendance registers11%
G11CStatic stores11%
H04BTransmission11%
H04LTransmission of digital information, e.g. telegraphic communication11%
H04MTelephonic communication11%
H04QSelecting11%
PatentTitleYear
6,751,232'Method and apparatus for communicating data between first and second pairs of transceivers communicating on a common communications link'20044,858,231'Bus interface loading assembly'19894,731,749'Electronic postage meter having multiple non-volatile memories for storing different historical information reflecting postage transactions'19884,706,215'Data protection system for electronic postage meters having multiple non-volatile multiple memories'19874,627,016'Memory address location system for an electronic postage meter having multiple non-volatile memories'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986–1988Patents assigned to PITNEY BOWES INC (3)· patent assignee history
1986–1988Based in Norwalk, CT, US· patent location history
1989Patents assigned to NORTHERN TELECOM LTD (1)· patent assignee history
1989Based in Ontario, CA· patent location history
2004Patents assigned to NORTEL NETWORKS LTD (1)· patent assignee history
2004Based in Richmond, CA· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PITNEY BOWES INC | 3 | 1986–1988 |
| NORTEL NETWORKS LTD | 1 | 2004 |
| NORTHERN TELECOM LTD | 1 | 1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Norwalk, CT, US | 3 | 1986–1988 |
| Richmond, CA | 1 | 2004 |
| Ontario, CA | 1 | 1989 |