US2096473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of control for electrically operated elevators
Assignee: EXPRESS LIFT Co Ltd
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Filing: 1936-04-29
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Granted: 1937-10-19
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Expires: 1956-04-29
Abstract
No abstract record available.
Inventors
- 👤 Stevens Ronald John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:34
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/34; B66B1/36; B66B1/44
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) | 1940-10-18 | 1941-04-19 | 1941-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-10-18 | 1945-04-19 | 1945-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-10-18 | 1949-04-19 | 1949-10-19 | $7700.00 | Window Closed / Lapsed |