US2972185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing strip material
Assignee: Individual
•
Filing: 1958-04-14
•
Granted: 1961-02-21
•
Expires: 1978-04-14
Abstract
No abstract record available.
Inventors
- 👤 Helen E Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:30
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/18; C23C4/185; C23C4/12; C23C4/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49982
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1128058A
Cited
US1444345A
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US1654509A
Cited
US1998496A
Cited
US2164737A
Cited
US2364713A
Cited
US2490543A
Cited
US2547371A
Cited
US2639490A
Cited
US2701775A
Cited
US2697671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-21 | 1964-08-22 | 1965-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-21 | 1968-08-22 | 1969-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-21 | 1972-08-22 | 1973-02-21 | $7700.00 | Window Closed / Lapsed |