US2491940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal milling head
Assignee: Individual
•
Filing: 1947-11-07
•
Granted: 1949-12-20
•
Expires: 1967-11-07
Abstract
No abstract record available.
Inventors
- 👤 Tree Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:15
CPC Classifications
B; B23; B23C; B23C1/00; B23C1/12; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30784; Y10T409/308512; Y10T409/308624; Y10T409/309296
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1971299A
Cited
US2178130A
Cited
US2289912A
Cited
US2267336A
Cited
US2296573A
Cited
US2404561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |