US2581026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strip threading apparatus
Assignee: Wean Engineering Co Inc
•
Filing: 1946-05-29
•
Granted: 1952-01-01
•
Expires: 1966-05-29
Abstract
No abstract record available.
Inventors
- 👤 John D Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:32
CPC Classifications
C; C23; C23G; C23G3/00; C23G3/02; C23G3/021
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US556637A
Cited
US1323954A
Cited
US721011A
Cited
US1358793A
Cited
US1624735A
Cited
US1992751A
Cited
US2071192A
Cited
US2277319A
Cited
US2328055A
Cited
US2411335A
Cited
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 |