US2587951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw slotter
Assignee: Illinois Tool Works Inc
•
Filing: 1946-06-26
•
Granted: 1952-03-04
•
Expires: 1966-06-26
Abstract
No abstract record available.
Inventors
- 👤 William C Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:43
CPC Classifications
B; B23; B23G; B23G9/00; B23G9/001; B23G9/002
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US40588A
Cited
US150667A
Cited
US580171A
Cited
US696756A
Cited
US907435A
Cited
US1058813A
Cited
US1151020A
Cited
US1292245A
Cited
US1408916A
Cited
US1793646A
Cited
US1584263A
Cited
US1611177A
Cited
US1520684A
Cited
US1629705A
Cited
US1962742A
Cited
US1899221A
Cited
US1921403A
Cited
US1966510A
Cited
US1938939A
Cited
US2253515A
Cited
US2221464A
Cited
US2311268A
Cited
US2423704A
Cited
US2528330A
Cited
US2487187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |