US3056137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener driving apparatus
Assignee: Duo Fast Corp
•
Filing: 1960-06-20
•
Granted: 1962-10-02
•
Expires: 1980-06-20
Abstract
No abstract record available.
Inventors
- 👤 Oscar A Wandel
- 👤 Richard H Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:52
CPC Classifications
B; B25; B25C; B25C5/00; B25C5/16; B25C1/00; B25C1/04; B25C1/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2314847A
Cited
US2719295A
Cited
US2781515A
Cited
US2715220A
Cited
US2801415A
Cited
US2850738A
Cited
US2887686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |