Patent US2510347A successfully refreshed from Google Patents.
US2510347A
Expired / Lapsed
US
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Photoelectric comparator having two bridge circuits
Assignee: RCA Corp
•
Filing: 1945-10-19
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Granted: 1950-06-06
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Expires: 1965-10-19
Abstract
No abstract record available.
Inventors
- 👤 Theodore B Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:07
CPC Classifications
H; H01; H01J; H01J40/00; H01J40/02; H01J40/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2123573A
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US1971317A
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US1963185A
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US1999023A
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US2139474A
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US2213534A
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US2286985A
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US2237950A
Cited
US2415174A
Cited
US2415177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |