Patent US3380323A successfully refreshed from Google Patents.
US3380323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power wrench
Assignee: Individual
•
Filing: 1966-02-15
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Granted: 1968-04-30
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Expires: 1986-02-15
Abstract
No abstract record available.
Inventors
- 👤 Andrew B Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:20
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US425370A
Cited
US2550045A
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US2618468A
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US2766684A
Cited
US2846909A
Cited
US3103357A
Cited
US3261241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |