US3144215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coilable extensible apparatus
Assignee: De Havilland Aircraft of Canada Ltd
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Filing: 1961-04-27
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Granted: 1964-08-11
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Expires: 1981-04-27
Abstract
No abstract record available.
Inventors
- 👤 George J Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:29
CPC Classifications
F; F16; F16H; F16H19/00; F16H19/02; F16H19/06; F16H19/064; B; B64; B64G; B64G99/00; H; H01; H01Q; H01Q1/00; H01Q1/08; H01Q1/085; H01Q1/087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |