US2193840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for metal removal
Assignee: Ingersoll Milling Machine Co
•
Filing: 1938-04-25
•
Granted: 1940-03-19
•
Expires: 1958-04-25
Abstract
No abstract record available.
Inventors
- 👤 Oberhoffken Alexander
- 👤 John M Strachan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:09
CPC Classifications
B; B23; B23Q; B23Q7/00; B23Q7/14; B23Q7/1426; B23Q7/1478; B23Q7/1489; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5196
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) | 1943-03-19 | 1943-09-18 | 1944-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-03-19 | 1947-09-18 | 1948-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-03-19 | 1951-09-18 | 1952-03-19 | $7700.00 | Window Closed / Lapsed |