US2251948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for machining workpieces
Assignee: Ingersoll Milling Machine Co
•
Filing: 1939-01-23
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Granted: 1941-08-12
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Expires: 1959-01-23
Abstract
No abstract record available.
Inventors
- 👤 Oberhoffken Alexander
- 👤 Frederick J Kampmeier
- 👤 Harry W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:46
CPC Classifications
B; B23; B23Q; B23Q7/00; B23Q7/14; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T29/5127; Y10T29/513; Y10T29/5152; Y10T29/5165; Y10T409/00; Y10T409/30; Y10T409/303864; Y10T409/304536; Y10T409/30532; Y10T409/305432
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) | 1944-08-11 | 1945-02-10 | 1945-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-11 | 1949-02-10 | 1949-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-11 | 1953-02-10 | 1953-08-12 | $7700.00 | Window Closed / Lapsed |