Patent US1949949A successfully refreshed from Google Patents.
US2946618A
Expired / Lapsed
US
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Grapple
Assignee: United States Steel Corp
•
Filing: 1958-08-07
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Granted: 1960-07-26
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Expires: 1978-08-07
Abstract
No abstract record available.
Inventors
- 👤 William R Klahn
- 👤 Raymond W Nenpert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:48
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/42; B66C1/44; B66C1/54; B66C1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1603913A
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US1767525A
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US1730128A
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US1765023A
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US1833545A
Cited
US1956231A
Cited
US2441026A
Cited
US2629128A
Cited
US2848269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |