Patent US2428049A successfully refreshed from Google Patents.
US2428049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill press
Assignee: Rockwell Manufacturing Co
•
Filing: 1943-10-26
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Granted: 1947-09-30
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Expires: 1963-10-26
Abstract
No abstract record available.
Inventors
- 👤 Tate James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:11
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/043; B23Q5/048; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19679
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US968718A
Cited
US1110455A
Cited
US1326398A
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US1444343A
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US1496867A
Cited
US1735398A
Cited
US1718721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-29 | 1951-03-31 | 1951-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-29 | 1955-03-31 | 1955-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-29 | 1959-03-31 | 1959-09-30 | $7700.00 | Window Closed / Lapsed |