US2630725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple cutter boring device
Assignee: United States Steel Corp
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Filing: 1951-06-15
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Granted: 1953-03-10
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Expires: 1971-06-15
Abstract
No abstract record available.
Inventors
- 👤 Edward T Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:17
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1934; Y10T407/1936; Y10T408/00; Y10T408/89; Y10T408/905; Y10T408/906; Y10T408/909; Y10T408/9098; Y10T408/90993
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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |