US2979725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener driving apparatus
Assignee: Duo Fast Corp
•
Filing: 1957-09-10
•
Granted: 1961-04-18
•
Expires: 1977-09-10
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 16:01
CPC Classifications
B; B25; B25C; B25C5/00; B25C5/16; B25C5/1696; B25C1/00; B25C1/001; B25C1/005; B25C1/04; B25C1/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1841217A
Cited
US2733440A
Cited
US2501362A
Cited
US2729198A
Cited
US2801414A
Cited
US2756426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |