US2700314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knurling apparatus
Assignee: Armco Inc
•
Filing: 1949-08-04
•
Granted: 1955-01-25
•
Expires: 1969-08-04
Abstract
No abstract record available.
Inventors
- 👤 Stanley P Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:13
CPC Classifications
B; B21; B21H; B21H7/00; B21H7/14; Y; Y10; Y10S; Y10S72/00; Y10S72/703
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US413625A
Cited
US60067A
Cited
US204149A
Cited
US206688A
Cited
US234222A
Cited
US318566A
Cited
US455336A
Cited
US415880A
Cited
US145285A
Cited
US855658A
Cited
US960769A
Cited
US1394716A
Cited
US1365386A
Cited
US1546091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-24 | 1958-07-26 | 1959-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-24 | 1962-07-26 | 1963-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-24 | 1966-07-26 | 1967-01-25 | $7700.00 | Window Closed / Lapsed |