Patent US1925867A successfully refreshed from Google Patents.
US1925867A
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US
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Elevator guide-rail supporting device
Assignee: Westinghouse Electric Elevator Co
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Filing: 1931-11-21
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Granted: 1933-09-05
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Expires: 1951-11-21
Abstract
No abstract record available.
Inventors
- 👤 Dunlop James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:35
CPC Classifications
B; B66; B66B; B66B7/00; B66B7/02; B66B7/023; B66B7/024; Y; Y10; Y10T; Y10T403/00; Y10T403/71; Y10T403/7117
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-09-04 | 1937-03-06 | 1937-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-09-04 | 1941-03-06 | 1941-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-09-04 | 1945-03-06 | 1945-09-05 | $7700.00 | Window Closed / Lapsed |