US1971592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aileron and flap construction
Assignee: ZAP DEV CORP
•
Filing: 1933-07-21
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Granted: 1934-08-28
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Expires: 1953-07-21
Abstract
No abstract record available.
Inventors
- 👤 Edward F Zaparka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:45
CPC Classifications
B; B64; B64C; B64C9/00; B64C9/14; B64C9/16; B64C9/18; B64C2009/005; Y; Y02; Y02T; Y02T50/00; Y02T50/30; Y02T50/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-08-27 | 1938-02-26 | 1938-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-08-27 | 1942-02-26 | 1942-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-08-27 | 1946-02-26 | 1946-08-28 | $7700.00 | Window Closed / Lapsed |