US2279462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined drilling and tapping machine
Assignee: Barnes Drill Co
•
Filing: 1940-04-01
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Granted: 1942-04-14
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Expires: 1960-04-01
Abstract
No abstract record available.
Inventors
- 👤 Chester O Holland
- 👤 Roscoe T Brokaw
- 👤 Elmer F Lundeen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:21
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/16; Y; Y10; Y10S; Y10S470/00; Y10S470/907; Y10T; Y10T408/00; Y10T408/13; Y10T408/14; Y10T408/16; Y10T408/17; Y10T408/172; Y10T408/65; Y10T408/675; Y10T408/6779
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) | 1945-04-13 | 1945-10-13 | 1946-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-04-13 | 1949-10-13 | 1950-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-04-13 | 1953-10-13 | 1954-04-14 | $7700.00 | Window Closed / Lapsed |