Patent US2879678A successfully refreshed from Google Patents.
US2879678A
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US
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Drill stand with adjustable and reversible electro-magnetic base
Assignee: DESIGN ENGINEERS
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Filing: 1956-07-25
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Granted: 1959-03-31
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Expires: 1976-07-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Herman D Kaiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:13
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; Y10T408/91; Y10T408/93
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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |