US2887190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevator and casing structure
Assignee: Jeffrey Manufacturing Co
•
Filing: 1953-11-05
•
Granted: 1959-05-19
•
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 11:38
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1666495A
Cited
US1757343A
Cited
US1922599A
Cited
US2241822A
Cited
DE712997C
Cited
US2333777A
Cited
US2491899A
Cited
US2570363A
Cited
US2661088A
Cited
US2560063A
Cited
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 |