US2991644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination lock
Assignee: Edwards Co Inc
•
Filing: 1958-08-29
•
Granted: 1961-07-11
•
Expires: 1978-08-29
Abstract
No abstract record available.
Inventors
- 👤 Robert S Edwards
- 👤 Albert E Sharp
- 👤 Kupferschmitt Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:19
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/08; E05B37/0075; E05B37/0082; E05B63/00; E05B63/04; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5531; Y10T70/70; Y10T70/7153; Y10T70/7181; Y10T70/7198; Y10T70/7237; Y10T70/7243; Y10T70/7249; Y10T70/7316; Y10T70/735; Y10T70/7401
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US611790A
Cited
US53959A
Cited
US359350A
Cited
US461020A
Cited
US470110A
Cited
US550655A
Cited
US298651A
Cited
US782304A
Cited
US940936A
Cited
US930079A
Cited
US1118024A
Cited
US1670042A
Cited
US2117420A
Cited
US2650491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |