US2463580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for increasing diameters
Assignee: Individual
•
Filing: 1946-05-10
•
Granted: 1949-03-08
•
Expires: 1966-05-10
Abstract
No abstract record available.
Inventors
- 👤 Edward A J Warshyk
- 👤 Daniel Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:28
CPC Classifications
B; B23; B23P; B23P6/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49716; Y10T29/49718; Y10T29/49732; Y10T29/49748; Y10T29/49826; Y10T29/49863; Y10T29/49874; Y10T29/49881; Y10T29/49908
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1617122A
Cited
US2375068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |