US3421925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing improved metallic strip material
Assignee: Westinghouse Electric Corp
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Filing: 1965-07-30
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Granted: 1969-01-14
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Expires: 1985-07-30
Abstract
No abstract record available.
Inventors
- 👤 Ronald A Hair
- 👤 Gerald J Hattrup
- 👤 John H Bramble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:08
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56; C21D8/00; C21D8/12; C21D8/1244; C21D8/125; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/16; C21D8/1216; C21D8/1238; C21D8/1272; C21D8/1277; C21D8/1283; Y; Y10; Y10S; Y10S428/00; Y10S428/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |