US2567029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throwout device for door operators
Assignee: H W CRANE CO
•
Filing: 1948-02-26
•
Granted: 1951-09-04
•
Expires: 1968-02-26
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Sauter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:41
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/214; E05Y2201/23; E05Y2201/244; E05Y2900/00; E05Y2900/10; E05Y2900/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US974566A
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US1043177A
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US1641551A
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US2072525A
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US2175651A
Cited
US2134615A
Cited
US2312475A
Cited
US2269759A
Cited
US2330533A
Cited
US2442295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |