US2861799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operating mechanism
Assignee: MCKEE DOOR Co
•
Filing: 1955-09-14
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Granted: 1958-11-25
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Expires: 1975-09-14
Abstract
No abstract record available.
Inventors
- 👤 Melvin E Hartzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:04
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/681; E05F15/684; E05Y; E05Y2800/00; E05Y2900/00; E05Y2900/10; E05Y2900/106; Y; Y10; Y10T; Y10T292/00; Y10T292/42; Y10T292/444; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18832; Y10T74/1884
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |