Patent US2674284A successfully refreshed from Google Patents.
US2674284A
Expired / Lapsed
US
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Cam actuated concrete form clamp
Assignee: Individual
•
Filing: 1951-01-11
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Granted: 1954-04-06
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Expires: 1971-01-11
Abstract
No abstract record available.
Inventors
- 👤 Philip N Sitton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:06
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/001; E04G17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US594874A
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US864166A
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US903996A
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US1000213A
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US974983A
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GB191106829A
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US1139818A
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US1228106A
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US1931834A
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US2518112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |