Patent DE883378C successfully refreshed from Google Patents.
US2779220A
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Universal drilling machine
Assignee: Hartford Special Machinery Co
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Filing: 1953-05-11
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Granted: 1957-01-29
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Expires: 1973-05-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Raymond J Dunn
- 👤 Jr Oscar L Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:15
CPC Classifications
B; B23; B23Q; B23Q39/00; B23Q39/04; B23Q39/042; B23B; B23B39/00; B23B39/16; B23B39/20; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/17; Y10T408/175; Y10T408/36; Y10T408/38; Y10T408/3806; Y10T408/52; Y10T408/54; Y10T408/545; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424; Y10T74/1435; Y10T74/1453
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) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |