US2574684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door controlling mechanism and limit switch
Assignee: SandenVendo America Inc
•
Filing: 1947-03-24
•
Granted: 1951-11-13
•
Expires: 1967-03-24
Abstract
No abstract record available.
Inventors
- 👤 Boley A Andrews
- 👤 George M Pro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:04
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/673; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/658; E05Y2201/668; E05Y2201/688; E05Y2900/00; E05Y2900/10; E05Y2900/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1828860A
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US1877161A
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US1934859A
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US2000515A
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US2022848A
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US2118930A
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US2200968A
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US2232257A
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US2253170A
Cited
US2231174A
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US2335336A
Cited
US2311972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |