Inventor
Ronald Sisselman
Inventor
Aurora, IL, US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G08Bprimary
G08BSignalling systems, e.g. personal calling systems100%
PatentTitleYear
5,574,436'Smoke detector including an indicator for indicating a missing primary power source which is powered by a substantially nonremovable secondary power source'19965,568,129'Alarm device including a self-test reminder circuit'19965,103,216'Improperly inserted battery detector'19925,055,830'Battery sensing mechanism'19914,901,056'Test initiation apparatus with continuous or pulse input'19904,827,244'Test initiation apparatus with continuous or pulse input'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1992Patents assigned to PITTWAY CORP (4)· patent assignee history
1989–1996Based in Aurora, IL, US· patent location history
1996Based in Lake Worth, FL, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PITTWAY CORP | 4 | 1989–1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Aurora, Illinois, US | 5 | 1989–1996 |
| Lake Worth, Florida, US | 1 | 1996 |