US1834145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve seating counterboring tool
Assignee: DORN ELECTRIC TOOL Co VAN
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Filing: 1929-01-31
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Granted: 1931-12-01
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Expires: 1949-01-31
Abstract
No abstract record available.
Inventors
- 👤 Edwin L Connell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:33
CPC Classifications
B; B23; B23Q; B23Q9/00; B23Q2709/00; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/564; Y10T408/5647; Y10T409/00; Y10T409/30; Y10T409/306216
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) | 1934-11-30 | 1935-06-01 | 1935-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-11-30 | 1939-06-01 | 1939-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-11-30 | 1943-06-01 | 1943-12-01 | $7700.00 | Window Closed / Lapsed |