Patent US2521322A successfully refreshed from Google Patents.
US2121784A
Expired / Lapsed
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Cowling fastener
Assignee: Individual
•
Filing: 1938-03-01
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Granted: 1938-06-28
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Expires: 1958-03-01
Abstract
No abstract record available.
Inventors
- 👤 Busby Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:49
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/02; F16B5/0208; F16B35/00; F16B35/04; F16B35/041; F16B37/00; F16B37/12; F16B41/00; F16B41/002; Y; Y10; Y10S; Y10S292/00; Y10S292/14; Y10T; Y10T292/00; Y10T292/08; Y10T292/0863; Y10T292/0864
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) | 1941-06-27 | 1941-12-27 | 1942-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-06-27 | 1945-12-27 | 1946-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-06-27 | 1949-12-27 | 1950-06-28 | $7700.00 | Window Closed / Lapsed |