US2602664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for door operating mechanism
Assignee: MCKEE DOOR Co
•
Filing: 1947-02-24
•
Granted: 1952-07-08
•
Expires: 1967-02-24
Abstract
No abstract record available.
Inventors
- 👤 Mahlon M Matchett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:41
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB260109A
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US1635442A
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US1788491A
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US1915806A
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US1870992A
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US1957990A
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US2201161A
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US2221039A
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US2198427A
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US2407537A
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US2540538A
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US2479713A
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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) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |