Patent US4108640A successfully refreshed from Google Patents.
US1679529A
Expired / Lapsed
US
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Automatic machine tool
Assignee: Barnes Drill Co
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Filing: 1923-03-08
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Granted: 1928-08-07
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Expires: 1943-03-08
Abstract
No abstract record available.
Inventors
- 👤 Albert M Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:09
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/16; B23G1/18; B23G1/185; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/165; Y10T408/52; Y10T408/54; Y10T408/545; Y10T408/65; Y10T408/675; Y10T408/6779; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424; Y10T74/1453
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) | 1931-08-07 | 1932-02-06 | 1932-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-08-07 | 1936-02-06 | 1936-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-08-07 | 1940-02-06 | 1940-08-07 | $7700.00 | Window Closed / Lapsed |