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US2631273A
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Apparatus for photoelectric detection
Assignee: ALERTRONIC PROTECTIVE CORP OF
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Filing: 1948-06-29
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Granted: 1953-03-10
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Expires: 1968-06-29
Abstract
No abstract record available.
Inventors
- 👤 Samuel M Bagno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:48
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/18; G08B13/181; G08B13/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1971191A
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US2044146A
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US2207540A
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US2062274A
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US2080504A
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US2202060A
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US2227147A
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US2302271A
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US2457502A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |