US2603131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll grooving method and apparatus
Assignee: United States Steel Corp
•
Filing: 1945-12-14
•
Granted: 1952-07-15
•
Expires: 1965-12-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Herman E Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:24
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/28; B23C3/34; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/300056; Y10T409/300112; Y10T409/300672
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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DE692128C
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CH202925A
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US2416518A
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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) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |