Patent US2549490A successfully refreshed from Google Patents.
US2549490A
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Multiple spindle drill gearing
Assignee: JAY B CHAMBERLAIN
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Filing: 1945-11-02
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Granted: 1951-04-17
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Expires: 1965-11-02
Abstract
No abstract record available.
Inventors
- 👤 George H Kuhl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:03
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/16; B23B39/161; B23B39/165; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/38; Y10T408/3811; Y10T408/65; Y10T408/665; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19079; Y10T74/19084; Y10T74/1956; Y10T74/19565; Y10T74/1957; Y10T82/00; Y10T82/25; Y10T82/2502; Y10T82/2504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |