US3456528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for driving an automatic door operator
Assignee: Panasonic Electric Works Co Ltd
•
Filing: 1967-09-27
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Granted: 1969-07-22
•
Expires: 1987-09-27
Abstract
No abstract record available.
Inventors
- 👤 Kunimori Maruyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:10
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/28; E; E05; E05F; E05F15/00; E05F15/40; E05F15/41; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/71; E05Y2201/72; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
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) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |