US3426829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay actuated overhead door safety catch
Assignee: Individual
•
Filing: 1968-01-02
•
Granted: 1969-02-11
•
Expires: 1988-01-02
Abstract
No abstract record available.
Inventors
- 👤 Herman M Mcdaniel
- 👤 Eugene O Koening
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:29
CPC Classifications
E; E05; E05D; E05D13/00; E05D13/003; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/106
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) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |