US2580830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination or key operable door lock
Assignee: Individual
•
Filing: 1948-11-12
•
Granted: 1952-01-01
•
Expires: 1968-11-12
Abstract
No abstract record available.
Inventors
- 👤 Pelle Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:00
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/0031; E05B37/0034; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5531; Y10T70/70; Y10T70/7147; Y10T70/7153; Y10T70/7181; Y10T70/7198; Y10T70/7237; Y10T70/726; Y10T70/7271; Y10T70/7311
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) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |