US3196660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of flattening metallic discs
Assignee: Specialties Development Corp
•
Filing: 1962-06-28
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Granted: 1965-07-27
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Expires: 1982-06-28
Abstract
No abstract record available.
Inventors
- 👤 Walter J Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:00
CPC Classifications
B; B21; B21D; B21D1/00; Y; Y10; Y10S; Y10S72/00; Y10S72/70; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE METHOD OF FLATTENING DISCS, WHICH METHOD COMPRISES SANDWICHING A RELATIVELY DUCTILE METALLIC DISC BETWEEN A PAIR OF METALLIC SCREEN SHEETS HAVING LESSER DUCTILITY THAN THE DISC; PLACING THE SANDWICH BETWEEN A PAIR OF DIES HAVING RIGID, FLAT, PARALLEL AND RELATIVELY HARD OP-
Claim 2
Independent Claim
43 words
THE METHOD OF FLATTENING DISCS, WHICH METHOD COMPRISES SANDWICHING A RELATIVELY DUCTILE METALLIC DISC BETWEEN A PAIR OF METALLIC SCREEN SHEETS HAVING LESSER DUCTILITY THAN THE DISC; PLACING THE SANDWICH BETWEEN A PAIR OF DIES HAVING RIGID, FLAT, PARALLEL AND RELATIVELY HARD OP-
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |