Patent US3420077A successfully refreshed from Google Patents.
US3420077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pick-proof locks
Assignee: GEORGE E DRAZIN
•
Filing: 1966-12-16
•
Granted: 1969-01-07
•
Expires: 1986-12-16
Abstract
No abstract record available.
Inventors
- 👤 George E Drazin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:08
CPC Classifications
E; E05; E05B; E05B27/00; E05B27/02; E05B27/08; E05B27/083; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7051; Y10T70/7057; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7554; Y10T70/7559; Y10T70/7576; Y10T70/7588; Y10T70/7593; Y10T70/778; Y10T70/7791; Y10T70/7904
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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |