US3052494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lifting device
Assignee: Yale and Towne Manufacturing Co
•
Filing: 1959-12-29
•
Granted: 1962-09-04
•
Expires: 1979-12-29
Abstract
No abstract record available.
Inventors
- 👤 William A Williamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:46
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242; B65H75/245; B65H75/2455; B66; B66C; B66C1/00; B66C1/10; B66C1/42; B66C1/44; B66C1/46; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53796; Y10T29/53839
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US922544A
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US1457596A
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US1488716A
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US1801353A
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US2486489A
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US2538693A
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US2575937A
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US2738192A
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US2824577A
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US2826445A
Cited
US2988396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |