US2578217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw and washer assembly machine
Assignee: Illinois Tool Works Inc
•
Filing: 1947-08-15
•
Granted: 1951-12-11
•
Expires: 1967-08-15
Abstract
No abstract record available.
Inventors
- 👤 William C Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:27
CPC Classifications
B; B23; B23P; B23P19/00; B23P19/04; B23P19/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US330925A
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US497493A
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US1693650A
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US665092A
Cited
US2152591A
Cited
US2278689A
Cited
US2284690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |