Patent US2820377A successfully refreshed from Google Patents.
US2820377A
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Portable magnetic drill press
Assignee: Buck Manufacturing Co
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Filing: 1954-06-01
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Granted: 1958-01-21
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Expires: 1974-06-01
Abstract
No abstract record available.
Inventors
- 👤 Eugene W Buck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:41
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/15; B23Q3/154; B23Q3/1543; B25; B25H; B25H1/00; B25H1/0021; B25H1/0057; B25H1/0064; B25H1/0071; Y; Y10; Y10S; Y10S408/00; Y10S408/712; Y10T; Y10T408/00; Y10T408/55; Y10T408/554; Y10T408/65; Y10T408/675; Y10T408/6779
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |