US2994025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for stopping elevators and the like
Assignee: TURNBULL ELEVATOR OF CANADA LT
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Filing: 1957-05-31
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Granted: 1961-07-25
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Expires: 1977-05-31
Abstract
No abstract record available.
Inventors
- 👤 Mitchell Omery Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:04
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/02; B66B1/06; B66B1/34; B66B1/3476
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2096473A
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US2099576A
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US2232257A
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US2602912A
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US2487891A
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US2746567A
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GB744160A
Cited
US2821672A
Cited
US2767367A
Cited
US2766415A
Cited
US2792080A
Cited
US2872633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |