Patent US2887190A successfully refreshed from Google Patents.
US2887190A
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US
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Elevator and casing structure
Assignee: Jeffrey Manufacturing Co
•
Filing: 1953-11-05
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Granted: 1959-05-19
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Expires: 1973-11-05
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Roloson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:50
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/12; B65G17/126; B01; B01J; B01J8/00; B01J8/08; B01J8/10; B65G2201/00; B65G2201/04; B65G2812/00; B65G2812/02; B65G2812/02267; B65G2812/02415; B65G2812/02613; B65G2812/02673; B65G2812/02683; B65G2812/02693; B65G2812/02702; B65G2812/02722
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1922599A
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US2241822A
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US2333777A
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US2491899A
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US2570363A
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US2661088A
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US2560063A
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US2736400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |