US3437478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free-machining austenitic stainless steels
Assignee: Crucible Steel Company of America
•
Filing: 1965-05-14
•
Granted: 1969-04-08
•
Expires: 1985-05-14
Abstract
No abstract record available.
Inventors
- 👤 Arthur Moskowitz
- 👤 Curtis W Kovach
- 👤 Ralph G Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:15
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/60; C22C38/18; C22C38/40; C22C38/42; C22C38/58
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2557862A
Cited
US2496245A
Cited
US2484903A
Cited
US2687955A
Cited
US2697035A
Cited
US2891958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |