US2455549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring winding machine
Assignee: Individual
•
Filing: 1946-01-05
•
Granted: 1948-12-07
•
Expires: 1966-01-05
Abstract
No abstract record available.
Inventors
- 👤 Benjamin Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:21
CPC Classifications
B; B21; B21F; B21F3/00; B21F3/02; B21F3/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US426386A
Cited
US689575A
Cited
US822445A
Cited
US1389893A
Cited
US1355587A
Cited
US1696121A
Cited
US1639397A
Cited
US1896670A
Cited
US1987334A
Cited
US2431928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |