US2270559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door lock
Assignee: Yale and Towne Manufacturing Co
•
Filing: 1938-07-21
•
Granted: 1942-01-20
•
Expires: 1958-07-21
Abstract
No abstract record available.
Inventors
- 👤 Samuel F Rolph
- 👤 Wartian Avagim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:38
CPC Classifications
E; E05; E05B; E05B83/00; E05B83/36; E05B85/00; E05B85/20; E05B85/24; Y; Y10; Y10S; Y10S292/00; Y10S292/26; Y10S292/37; Y10S292/40; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0972; Y10T292/0974; Y10T292/306; Y10T292/307; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/55; Y10T70/5513
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) | 1945-01-19 | 1945-07-21 | 1946-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-01-19 | 1949-07-21 | 1950-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-01-19 | 1953-07-21 | 1954-01-20 | $7700.00 | Window Closed / Lapsed |