Patent US3173340A successfully refreshed from Google Patents.
US3173340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener driving tool
Assignee: Duo Fast Corp
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Filing: 1963-11-29
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Granted: 1965-03-16
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Doyle Richard Henry
- 👤 Fiedler Armin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:10
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/04; B25C1/041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A FASTENER DRIVING TOOL COMPRISING A HOUSING INCLUDING A CYLINDER AND A RESERVOIR SUPPLIED WITH FLUID UNDER PRESSURE, FASTENER DRIVING MEANS INCLUDING A PISTON SLIDABLY MOUNTED IN THE CYLINDER, FIRST VALVE MEANS CARRIED ON THE HOUSING AND OPERABLE FROM A NORMAL POSITION CONNECTING ONE END OF THE CYLINDER TO THE ATMOSPHERE TO AN OPERATING POSITION CONNECTING THE ONE END OF THE CYLINDER TO THE RESERVOIR, SECOND VALVE MEANS CAR-
Claim 2
Dependent Claim
69 words
A FASTENER DRIVING TOOL COMPRISING A HOUSING INCLUDING A CYLINDER AND A RESERVOIR SUPPLIED WITH FLUID UNDER PRESSURE, FASTENER DRIVING MEANS INCLUDING A PISTON SLIDABLY MOUNTED IN THE CYLINDER, FIRST VALVE MEANS CARRIED ON THE HOUSING AND OPERABLE FROM A NORMAL POSITION CONNECTING ONE END OF THE CYLINDER TO THE ATMOSPHERE TO AN OPERATING POSITION CONNECTING THE ONE END OF THE CYLINDER TO THE RESERVOIR, SECOND VALVE MEANS CAR-
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |