US2429385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parachute canopy and method of making same
Assignee: Individual
•
Filing: 1945-08-22
•
Granted: 1947-10-21
•
Expires: 1965-08-22
Abstract
No abstract record available.
Inventors
- 👤 Birdman Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:29
CPC Classifications
B; B64; B64D; B64D17/00; B64D17/40; B64D17/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1466988A
Cited
US1427772A
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US1603648A
Cited
US1795168A
Cited
US2053342A
Cited
FR801996A
Cited
US2389578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-20 | 1951-04-21 | 1951-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-20 | 1955-04-21 | 1955-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-20 | 1959-04-21 | 1959-10-21 | $7700.00 | Window Closed / Lapsed |