Patent US2852300A successfully refreshed from Google Patents.
US2852300A
Expired / Lapsed
US
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Positive grip lifting clamp with direct hand lock
Assignee: MERRILL BROTHERS
•
Filing: 1954-04-07
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Granted: 1958-09-16
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Expires: 1974-04-07
Abstract
No abstract record available.
Inventors
- 👤 Gardner Edward Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:38
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/42; B66C1/44; B66C1/48; Y; Y10; Y10S; Y10S294/00; Y10S294/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2370411A
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US2393101A
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US2543017A
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US2549918A
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US2446610A
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US2542289A
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US2497293A
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US2700452A
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US2676838A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |