US2947534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic operating device for doors, gates and like swingable elements
Assignee: Individual
•
Filing: 1957-12-18
•
Granted: 1960-08-02
•
Expires: 1977-12-18
Abstract
No abstract record available.
Inventors
- 👤 Leimer Albert
- 👤 Aumuller Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:20
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/611; E05F15/63; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/23; E05Y2201/232; E05Y2201/236; E05Y2201/40; E05Y2201/43; E05Y2201/434; E05Y2400/00; E05Y2400/10; E05Y2400/30; E05Y2400/3013; E05Y2600/00; E05Y2600/40; E05Y2600/46; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; E05Y2900/40; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1249110A
Cited
US1417173A
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US1684704A
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US2024300A
Cited
US2032724A
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US2138521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |