US2922604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parachute pack construction
Assignee: Irving Air Chute Co Inc
•
Filing: 1956-07-27
•
Granted: 1960-01-26
•
Expires: 1976-07-27
Abstract
No abstract record available.
Inventors
- 👤 John E Hatfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:06
CPC Classifications
B; B64; B64D; B64D17/00; B64D17/40; B64D17/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB420059A
Cited
GB580029A
Cited
US2542925A
Cited
US2519923A
Cited
US2495341A
Cited
US2812148A
Cited
US2676655A
Cited
FR1099529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |