Patent US2680004A successfully refreshed from Google Patents.
US2680004A
Expired / Lapsed
US
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Hoist
Assignee: Individual
•
Filing: 1950-11-24
•
Granted: 1954-06-01
•
Expires: 1970-11-24
Abstract
No abstract record available.
Inventors
- 👤 Herker Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:12
CPC Classifications
B; B66; B66D; B66D3/00; B66D3/12; B66D2700/00; B66D2700/02; B66D2700/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US152145A
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US479136A
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US1015459A
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US1464294A
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US1522047A
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US1529796A
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US1926452A
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US1928532A
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US2342020A
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US2323404A
Cited
US2481037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |