Patent US3146524A successfully refreshed from Google Patents.
US3146524A
Expired / Lapsed
US
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Method for forming articles from sheet material
Assignee: General Mills Inc
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Filing: 1961-11-16
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Granted: 1964-09-01
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Expires: 1981-11-16
Abstract
No abstract record available.
Inventors
- 👤 Carl H Tetzloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:30
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/10; B21D28/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49764; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A METHOD OF PRODUCING ARTICLES FROM SHEET METAL WHICH COMPRISES PLAXING SEVERAL METAL SHEETS BETWEEN A DIE MEMBER AND A DEFORMABLE MATRIX MATERIAL, APPLYING PRESSRE TO DEFORM SAID MATERIAL AGAINST SAID DIE MEMBER, AND TERMINATING SAID APPLICATION OF PRESSURE WHEN AN EX-
Claim 2
Independent Claim
42 words
A METHOD OF PRODUCING ARTICLES FROM SHEET METAL WHICH COMPRISES PLAXING SEVERAL METAL SHEETS BETWEEN A DIE MEMBER AND A DEFORMABLE MATRIX MATERIAL, APPLYING PRESSRE TO DEFORM SAID MATERIAL AGAINST SAID DIE MEMBER, AND TERMINATING SAID APPLICATION OF PRESSURE WHEN AN EX-
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |