Patent US2304779A successfully refreshed from Google Patents.
US2304779A
Expired / Lapsed
US
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Toolhead unit
Assignee: VAN NORMAN MACHINE TOOL CO
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Filing: 1941-01-18
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Granted: 1942-12-15
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Expires: 1961-01-18
Abstract
No abstract record available.
Inventors
- 👤 Frank W Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:08
CPC Classifications
B; B23; B23C; B23C9/00; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/675; Y10T408/6771; Y10T408/6774; Y10T409/00; Y10T409/30; Y10T409/30784; Y10T409/307952; Y10T409/308232
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-12-14 | 1946-06-15 | 1946-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-12-14 | 1950-06-15 | 1950-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-12-14 | 1954-06-15 | 1954-12-15 | $7700.00 | Window Closed / Lapsed |