US2953777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft position converter device
Assignee: Individual
•
Filing: 1949-07-26
•
Granted: 1960-09-20
•
Expires: 1969-07-26
Abstract
No abstract record available.
Inventors
- 👤 Darrin H Gridley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/1235
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2207743A
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US2132213A
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US2318591A
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US2254933A
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US2268133A
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US2278485A
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US2397604A
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US2502837A
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US2453454A
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US2496585A
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US2595701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |