US2689053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoisting apparatus
Assignee: LOURIE L EAKIN
•
Filing: 1948-10-18
•
Granted: 1954-09-14
•
Expires: 1968-10-18
Abstract
No abstract record available.
Inventors
- 👤 John A Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
B; B66; B66C; B66C13/00; B66C13/18; B66C2700/00; B66C2700/06; B66C2700/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US736742A
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US995948A
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US1388831A
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US1598220A
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US1834822A
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US2111341A
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US2181253A
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GB524676A
Cited
US2371596A
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US2575262A
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FR939808A
Cited
US2554140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |