US3548619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle-borne unlocker of combination-lock
Assignee: Individual
•
Filing: 1968-11-01
•
Granted: 1970-12-22
•
Expires: 1988-11-01
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Purdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:57
CPC Classifications
G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00658; G07C9/00666; G07C9/00896; G07C2009/00928; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7006; Y10T70/7028; Y10T70/7051; Y10T70/7062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2879657A
Cited
US2876002A
Cited
US2859960A
Cited
US2986689A
Cited
US3036256A
Cited
US3017763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |