Patent US2746129A successfully refreshed from Google Patents.
US2746129A
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Method of producing a taut thin member
Assignee: AT&T Inc
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Filing: 1949-11-16
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Granted: 1956-05-22
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Expires: 1969-11-16
Abstract
No abstract record available.
Inventors
- 👤 Christensen Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:47
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49085; Y10T29/4981; Y10T29/49826; Y10T29/49861; Y10T29/49892
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
THE METHOD OF PRODUCING A TAUT, THIN, METALLIC MEMBER COMPRISING SECURING A MEMBER HAVING A THICKNESS OF THE ORDER OF A MICRON TO A FRAME, OXIDIZING THE SURFACE PORTIONS ONLY OF SAID MEMBER, RAPIDLY HEATING THE OXIDIZED MEMBER IN A REDUCING ATMOSPHERE TO REDUCE THE OXIDIZED SURFACE PORTIONS OF THE MEMBER AND DRAW THE MEMBER TAUT, AND THEN SLOWLY COOLING THE FRAME-HELD MEMBER.
Claim 2
Independent Claim
63 words
THE METHOD OF PRODUCING A TAUT, THIN, METALLIC MEMBER COMPRISING SECURING A MEMBER HAVING A THICKNESS OF THE ORDER OF A MICRON TO A FRAME, OXIDIZING THE SURFACE PORTIONS ONLY OF SAID MEMBER, RAPIDLY HEATING THE OXIDIZED MEMBER IN A REDUCING ATMOSPHERE TO REDUCE THE OXIDIZED SURFACE PORTIONS OF THE MEMBER AND DRAW THE MEMBER TAUT, AND THEN SLOWLY COOLING THE FRAME-HELD MEMBER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |