US3384994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operator locking mechanism
Assignee: Vapor Corp
•
Filing: 1966-06-13
•
Granted: 1968-05-28
•
Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Daugirdas Kristupas
- 👤 Carl W Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:26
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/50; E05F15/56; E05F15/565; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR744697A
Cited
US1914359A
Cited
US2637920A
Cited
US3104098A
Cited
US3237932A
Cited
US3247615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |