US2672770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic drill unit
Assignee: ANTONIO CANO
•
Filing: 1952-05-10
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Granted: 1954-03-23
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Expires: 1972-05-10
Abstract
No abstract record available.
Inventors
- 👤 Eugene W Buck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:36
CPC Classifications
B; 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; Y10T408/91; Y10T408/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US596375A
Cited
US676043A
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FR369374A
Cited
US1023921A
Cited
US1176584A
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US1184829A
Cited
FR691267A
Cited
US2024390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |