US2619346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operating device
Assignee: Individual
•
Filing: 1949-10-17
•
Granted: 1952-11-25
•
Expires: 1969-10-17
Abstract
No abstract record available.
Inventors
- 👤 Allan F Schmalzriedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:13
CPC Classifications
F; F16; F16H; F16H19/00; F16H19/02; F16H19/025; E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/676; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/674; E05Y2800/00; E05Y2900/00; E05Y2900/10; E05Y2900/106; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18568
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US402674A
Cited
US513880A
Cited
US1916491A
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US1977223A
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US2204638A
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US2215678A
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US2476683A
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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) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |