US2740495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevator systems
Assignee: Westinghouse Electric Corp
•
Filing: 1953-03-17
•
Granted: 1956-04-03
•
Expires: 1973-03-17
Abstract
No abstract record available.
Inventors
- 👤 Santini Danilo
- 👤 Suozzo John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:34
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/02; B66B1/06; B66B1/14; B66B1/18; B66B1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1904647A
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US2057480A
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US2172187A
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US2376113A
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US2468317A
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US2589242A
Cited
US2619197A
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US2652903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |