Patent US2768664A successfully refreshed from Google Patents.
US2768664A
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US
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Quick acting clamping device
Assignee: I L HARTENBERG
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Filing: 1952-04-22
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Granted: 1956-10-30
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Expires: 1972-04-22
Abstract
No abstract record available.
Inventors
- 👤 Porter S Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:12
CPC Classifications
B; B25; B25B; B25B1/00; B25B1/06; B25B1/10; B25B1/12; B25B1/125; B25B5/00; B25B5/06; B25B5/10; B25B5/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US323776A
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US656410A
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US1197063A
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US1719630A
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US1966064A
Cited
US2190585A
Cited
US2414348A
Cited
US2430458A
Cited
US2576420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |