Patent US2882520A successfully refreshed from Google Patents.
US2882520A
Expired / Lapsed
US
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Photo-electric sighting device
Assignee: Individual
•
Filing: 1953-03-04
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Granted: 1959-04-14
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Expires: 1973-03-04
Abstract
No abstract record available.
Inventors
- 👤 Edward C Hass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:40
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1970103A
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US2066934A
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US2193606A
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US2252727A
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US2555674A
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US2490627A
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US2455243A
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US2604528A
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US2548755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |