US2745692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking mechanism
Assignee: Individual
•
Filing: 1952-01-15
•
Granted: 1956-05-15
•
Expires: 1972-01-15
Abstract
No abstract record available.
Inventors
- 👤 Persson Eric Sigfrid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:51
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/32; Y; Y10; Y10T; Y10T292/00; Y10T292/28; Y10T292/282; Y10T292/304
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
NL31330C
Cited
US373984A
Cited
US611291A
Cited
US1055829A
Cited
US1746556A
Cited
US2246192A
Cited
US2361056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |