Patent US507635A successfully refreshed from Google Patents.
Patent US1422467A successfully refreshed from Google Patents.
US1422467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doorknob lock
Assignee: Individual
•
Filing: 1921-09-13
•
Granted: 1922-07-11
•
Expires: 1941-09-13
Abstract
No abstract record available.
Inventors
- 👤 Nelson John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:39
CPC Classifications
E; E05; E05B; E05B13/00; E05B13/10; E05B13/106; E05B13/108; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5394; Y10T70/5456; Y10T70/546; Y10T70/5611; Y10T70/5757; Y10T70/5832
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1925-07-10 | 1926-01-09 | 1926-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-07-10 | 1930-01-09 | 1930-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-07-10 | 1934-01-09 | 1934-07-11 | $7700.00 | Window Closed / Lapsed |