US2551728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing a grooved article
Assignee: Individual
•
Filing: 1949-04-26
•
Granted: 1951-05-08
•
Expires: 1969-04-26
Abstract
No abstract record available.
Inventors
- 👤 Stephen F Cybulski
- 👤 William C Christie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:26
CPC Classifications
B; B23; B23G; B23G7/00; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T82/00; Y10T82/13; Y10T82/135; Y10T82/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US303317A
Cited
US1344536A
Cited
US1611191A
Cited
US1766210A
Cited
US1910420A
Cited
GB393460A
Cited
US2409993A
Cited
US2471654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |