Patent US2431294A successfully refreshed from Google Patents.
US2431294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified bar-stock chucking lathe with rotary cutters
Assignee: Dow Chemical Co
•
Filing: 1945-11-01
•
Granted: 1947-11-18
•
Expires: 1965-11-01
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Dulmage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:37
CPC Classifications
B; B23; B23C; B23C7/00; Y; Y10; Y10T; Y10T29/00; Y10T29/14; Y10T29/142; Y10T29/143; Y10T407/00; Y10T407/19; Y10T407/1902; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/305544; Y10T409/305656; Y10T409/305768
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US294192A
Cited
US339197A
Cited
US635908A
Cited
US684043A
Cited
US1213896A
Cited
US1793691A
Cited
US2368870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |