Patent US4546148A successfully refreshed from Google Patents.
Patent US1850299A successfully refreshed from Google Patents.
US1850299A
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Automatic drill head
Assignee: BRADFORD MACHINE TOOL Co
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Filing: 1928-10-10
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Granted: 1932-03-22
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Expires: 1948-10-10
Abstract
No abstract record available.
Inventors
- 👤 Sydney C Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:25
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/04; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/48; B23Q1/4828; B23Q5/00; B23Q5/22; B23Q5/34; B23Q5/341; B23Q5/54; Y; Y10; Y10T; Y10T408/00; Y10T408/13; Y10T408/14; Y10T408/65; Y10T408/675; Y10T408/6771; Y10T74/00; Y10T74/21; Y10T74/2101
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) | 1935-03-22 | 1935-09-21 | 1936-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-22 | 1939-09-21 | 1940-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-22 | 1943-09-21 | 1944-03-22 | $7700.00 | Window Closed / Lapsed |