US2460490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube working apparatus
Assignee: Alcoa Corp
•
Filing: 1944-05-15
•
Granted: 1949-02-01
•
Expires: 1964-05-15
Abstract
No abstract record available.
Inventors
- 👤 Cook Mark Frederic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:24
CPC Classifications
B; B21; B21D; B21D41/00; B21D41/04; Y; Y10; Y10S; Y10S29/00; Y10S29/057; Y10S29/061; Y10S29/068; Y10S29/078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US822706A
Cited
US936166A
Cited
US1543191A
Cited
US1617890A
Cited
DE615715C
Cited
US2232018A
Cited
US2353008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-01 | 1952-08-02 | 1953-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-01 | 1956-08-02 | 1957-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-01 | 1960-08-02 | 1961-02-01 | $7700.00 | Window Closed / Lapsed |