US2744356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parachute carrying aerial disk
Assignee: Individual
•
Filing: 1953-06-04
•
Granted: 1956-05-08
•
Expires: 1973-06-04
Abstract
No abstract record available.
Inventors
- 👤 John W Killinger
- 👤 Demis Marie
- 👤 Michael C Demis
- 👤 Charles W Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:51
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/20; A63H33/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US349160A
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US494261A
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FR890001A
Cited
US678265A
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US700166A
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US2289314A
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US2529872A
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US2490031A
Cited
US2499483A
Cited
US2640699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |