Patent US3419893A successfully refreshed from Google Patents.
US3419893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permutation locks
Assignee: Newfrey LLC
•
Filing: 1966-06-13
•
Granted: 1968-12-31
•
Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Carl A Vahlstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:23
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/02; E05B37/025; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/417; Y10T70/422
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |