US3035798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parachute
Assignee: Helipara Luftfahrzeugbau GmbH
•
Filing: 1958-07-07
•
Granted: 1962-05-22
•
Expires: 1978-07-07
Abstract
No abstract record available.
Inventors
- 👤 Brinkmann Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:29
CPC Classifications
B; B64; B64D; B64D17/00; B64D17/40; B64D17/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1341794A
Cited
CH141741A
Cited
US2369286A
Cited
US2517417A
Cited
US2644656A
Cited
US2721716A
Cited
FR1129226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |