Patent US2307975A successfully refreshed from Google Patents.
US2307975A
Expired / Lapsed
US
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Horizontal boring, drilling, and milling machine
Assignee: GA Gray Co
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Filing: 1942-03-21
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Granted: 1943-01-12
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Expires: 1962-03-21
Abstract
No abstract record available.
Inventors
- 👤 John M Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:20
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/70; B23Q1/25; B23Q1/26; B23Q1/28; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5104; Y10T29/5105; Y10T408/00; Y10T408/65; Y10T408/675; Y10T409/00; Y10T409/30; Y10T409/306664; Y10T409/306776; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18304; Y10T74/18312
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) | 1946-01-11 | 1946-07-13 | 1947-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-11 | 1950-07-13 | 1951-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-11 | 1954-07-13 | 1955-01-12 | $7700.00 | Window Closed / Lapsed |