Inventor
Walter V. Bratkowski
Inventor
McKeesport, PA, US
Overview
Patents· 19 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Hprimary
H01HElectric switches63%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them13%
H02KDynamo-electric machines13%
H01FMagnets8%
G08BSignalling systems, e.g. personal calling systems4%
PatentTitleYear
5,034,714'Universal relay'19915,023,583'Circuit breaker contact operating structure'19914,968,859'Circuit breaker with low voltage contact structure'19904,801,772'Current limiting circuit interrupter with insulating wedge'19894,725,799'Circuit breaker with remote control'19884,680,562'Integral circuit interrupter with separable modules'19874,654,614'Current limiting solenoid operated circuit breaker'19874,625,190'Remotely controlled solenoid operated circuit breaker'19864,563,553'Circuit breaker having integral cover/handle assembly'19864,559,511'Vacuum contactor having DC electromagnet with improved force watts ratio'19854,336,516'Circuit breaker with stored energy toggle-lock structure'19824,267,419'Circuit breaker structure with shock absorbers'19814,255,732'Current limiting circuit breaker'19814,158,827'Current limiting contactor'19794,118,717'Automatic film-exposure control system and electrical power supply means for a photographic camera'19784,101,792'Mechanically-powered electric generator for instant-photographic camera and other apparatus'19784,020,369'Compact mechanically-powered electric generator for a camera or other apparatus'19774,013,926'Circuit breaker with improved trip actuator and undervoltage release mechanism'19773,963,948'Magnetic pulse generator'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1991Patents assigned to WESTINGHOUSE ELECTRIC CORP (19)· patent assignee history
1976–1991Based in McKeesport, PA, US· patent location history
1981Based in McKessport, PA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WESTINGHOUSE ELECTRIC CORP | 19 | 1976–1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| McKeesport, Pennsylvania, US | 18 | 1976–1991 |
| McKessport, Pennsylvania, US | 1 | 1981 |