US2840194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock-absorbing air cushion
Assignee: GQ Parachute Co Ltd
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Filing: 1955-11-28
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Granted: 1958-06-24
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Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Mitchell John Rothwell
- 👤 Rollings William Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:21
CPC Classifications
B; B64; B64D; B64D1/00; B64D1/02; B64D1/08; B64D1/14; F; F16; F16F; F16F9/00; F16F9/02; F16F9/04; F16F9/0472; F16F9/0481
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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |