US2741755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevator position or signal indicating circuit
Assignee: Otis Elevator Co
•
Filing: 1951-04-06
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Granted: 1956-04-10
•
Expires: 1971-04-06
Abstract
No abstract record available.
Inventors
- 👤 Galanty Harold Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:41
CPC Classifications
B; B66; B66B; B66B3/00; B66B3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US843746A
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GB314112A
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US1878872A
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US1960701A
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US2224709A
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US2278516A
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US2303423A
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US2352742A
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US2620395A
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US2568348A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |