Patent US3388380A successfully refreshed from Google Patents.
US2309329A
Expired / Lapsed
US
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Photoelectric apparatus
Assignee: ELECTRONIC CONTROLS CORP
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Filing: 1941-08-20
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Granted: 1943-01-26
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Expires: 1961-08-20
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:28
CPC Classifications
F; F16; F16P; F16P3/00; F16P3/12; F16P3/14; F16P3/144
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-01-25 | 1946-07-27 | 1947-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-25 | 1950-07-27 | 1951-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-25 | 1954-07-27 | 1955-01-26 | $7700.00 | Window Closed / Lapsed |