US3468061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric actuator for automatic doors
Assignee: Individual
•
Filing: 1967-10-23
•
Granted: 1969-09-23
•
Expires: 1987-10-23
Abstract
No abstract record available.
Inventors
- 👤 Kazuyoshi Ozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:20
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/632; E05F15/643; E05Y; 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) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |