US2680379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Program device
Assignee: Individual
•
Filing: 1951-11-20
•
Granted: 1954-06-08
•
Expires: 1971-11-20
Abstract
No abstract record available.
Inventors
- 👤 Duquenne Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:23
CPC Classifications
D; D06; D06F; D06F33/00; D06F33/04; D06F33/06; F; F16; F16H; F16H31/00; F16H31/003; F16H31/005; G; G05; G05G; G05G21/00; H; H01; H01H; H01H43/00; H01H43/10; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1558; Y10T74/1565; Y10T74/1566; Y10T74/1568
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323216A
Cited
US1565336A
Cited
US2042116A
Cited
US2341669A
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US2344253A
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US2380732A
Cited
US2597359A
Cited
US2632332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |