Patent US2814322A successfully refreshed from Google Patents.
US2814322A
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Flexible shaft hand tool
Assignee: KUPFRIAN Manufacturing CORP
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Filing: 1955-01-06
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Granted: 1957-11-26
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Expires: 1975-01-06
Abstract
No abstract record available.
Inventors
- 👤 Wilbur J Kupfrian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:35
CPC Classifications
F; F16; F16C; F16C1/00; F16C1/02; B; B25; B25B; B25B13/00; B25B13/48; B25B13/481; B25B15/00; B25B15/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2619860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |