US2416296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for and method of cutting spiral grooves in grooved rolls
Assignee: Individual
•
Filing: 1943-01-13
•
Granted: 1947-02-25
•
Expires: 1963-01-13
Abstract
No abstract record available.
Inventors
- 👤 William T Fields
- 👤 Edgar M D Herold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:02
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/28; B23C3/32; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/300056; Y10T409/300112; Y10T409/300672
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US606837A
Cited
US801337A
Cited
US1128613A
Cited
US1751540A
Cited
US1609045A
Cited
US1881652A
Cited
US2010662A
Cited
US2048947A
Cited
US2309594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-24 | 1950-08-26 | 1951-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-24 | 1954-08-26 | 1955-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-24 | 1958-08-26 | 1959-02-25 | $7700.00 | Window Closed / Lapsed |