Patent US3293725A successfully refreshed from Google Patents.
US3293725A
Expired / Lapsed
US
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Rolled sheets having openings therethrough and process for their manufacture
Assignee: Hudson Engineering Corp
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Filing: 1964-02-24
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Granted: 1966-12-27
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Addison Y Gunter
- 👤 Thomas E Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:07
CPC Classifications
B; B21; B21D; B21D31/00; B21D31/04; B21D31/046; Y; Y10; Y10T; Y10T29/00; Y10T29/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A IN A PROCESS OF MANUFACTURING A SHEET OF MALLEABLE MATERIAL HAVING A SERIES OF OPENINGS THERETHROUGH, THE STEP OF APPLYING ROLLING STRESS TO LATERALLY SPACED APART LONGITUDINAL AREAS OF THE SHEET WHICH IS SUFFICIENTLY GREATER THAN THE SIMULTANEOUSLY APPLIED TO AN UNSLIT LONGITUDINAL AREA THEREBETWEEN THAT THE ELONGATION OF THE LATERALLY SPACED APART AREAS RELATIVE TO THE UNSLIT AREA WILL STRETCH
Claim 2
Dependent Claim
62 words
A IN A PROCESS OF MANUFACTURING A SHEET OF MALLEABLE MATERIAL HAVING A SERIES OF OPENINGS THERETHROUGH, THE STEP OF APPLYING ROLLING STRESS TO LATERALLY SPACED APART LONGITUDINAL AREAS OF THE SHEET WHICH IS SUFFICIENTLY GREATER THAN THE SIMULTANEOUSLY APPLIED TO AN UNSLIT LONGITUDINAL AREA THEREBETWEEN THAT THE ELONGATION OF THE LATERALLY SPACED APART AREAS RELATIVE TO THE UNSLIT AREA WILL STRETCH
References Cited (Backward Citations)
US1696833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |