US2853868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permutation lock
Assignee: —
•
Filing: —
•
Granted: 1958-09-30
•
Expires: 1975-09-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:16
CPC Classifications
—
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1310634A
Cited
US907493A
Cited
AT73849B
Cited
US1481380A
Cited
US1640935A
Cited
US1719637A
Cited
US1754074A
Cited
FR823031A
Cited
US2163852A
Cited
US2163853A
Cited
US2460615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |