US2607935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw threading die and its manufacture
Assignee: English Steel Corp Ltd
•
Filing: 1949-09-26
•
Granted: 1952-08-26
•
Expires: 1969-09-26
Abstract
No abstract record available.
Inventors
- 👤 Archer John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:07
CPC Classifications
B; B21; B21H; B21H3/00; B21H3/02; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/904
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US437385A
Cited
US1395252A
Cited
US832380A
Cited
US1125784A
Cited
US1220460A
Cited
US1465337A
Cited
US1682996A
Cited
US1771051A
Cited
FR722227A
Cited
US2151258A
Cited
US2278962A
Cited
US2320573A
Cited
US2442908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |