US2523645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door sensitive edge actuated switch
Assignee: ELEVATOR SUPPLIES CO Inc
•
Filing: 1946-11-26
•
Granted: 1950-09-26
•
Expires: 1966-11-26
Abstract
No abstract record available.
Inventors
- 👤 Carl O Bruestle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:36
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/40; E05F15/42; E05F15/48; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/531
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1287717A
Cited
US1705406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |