Patent US2647294A successfully refreshed from Google Patents.
US2647294A
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US
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Releasable fastener
Assignee: Individual
•
Filing: 1949-09-23
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Granted: 1953-08-04
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Expires: 1969-09-23
Abstract
No abstract record available.
Inventors
- 👤 Frank L Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:59
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/10; F16B12/28; F16B12/34; Y; Y10; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45602; Y10T24/45623; Y10T24/45639; Y10T24/45654; Y10T24/45675; Y10T24/45686; Y10T24/45696; Y10T24/45707; Y10T24/45723; Y10T24/45743; Y10T24/45754; Y10T292/00; Y10T292/42; Y10T292/444
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |