Patent US2480835A successfully refreshed from Google Patents.
US2480835A
Expired / Lapsed
US
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Photoelectric control apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1946-12-10
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Granted: 1949-09-06
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Expires: 1966-12-10
Abstract
No abstract record available.
Inventors
- 👤 Stephen L Burgwin
- 👤 Francis T Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:47
CPC Classifications
B; B41; B41F; B41F13/00; B41F13/02; B41F13/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1807602A
Cited
US1227292A
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US1917379A
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US2091303A
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US2329818A
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US2348862A
Cited
US2290775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |