US3267559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-contoured structures and process
Assignee: Lockheed Martin Corp
•
Filing: 1961-12-01
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Granted: 1966-08-23
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Expires: 1981-12-01
Abstract
No abstract record available.
Inventors
- 👤 Leon E Laux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:40
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346; Y10T29/4935; Y10T29/49357; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE METHOD OF FORMING A MULTI-CONTOURED CORRUGATED STRUCTURE COMPRISING THE STEPS OF: (A) CORRUGATING A FLAT SHEET OF METAL, (B) COMPRESSING THE RESULTING FLAT CORRUGATED METAL SHEET TRANSVERSELY WITH RESPECT TO THE CORRUGATIONS, (C) PROFILE-CONTOURING SAID FLAT CORRUGATED METAL SHEET, (D) EXPANDING SAID PROFILE-CONTOURED CORRUGATED METAL SHEET OVER A PREFORMED INNER SHELL, (E) SECURING RESULTING MULTI-CONTOURED CORRUGATED METAL SHEET TO SAID INNER SHELL, AND (F) PROVIDING AN OUTER SHELL OVER SAID MULTI-CONTOURED CORRUGATED METAL SHEET.
Claim 2
Independent Claim
75 words
THE METHOD OF FORMING A MULTI-CONTOURED CORRUGATED STRUCTURE COMPRISING THE STEPS OF: (A) CORRUGATING A FLAT SHEET OF METAL, (B) COMPRESSING THE RESULTING FLAT CORRUGATED METAL SHEET TRANSVERSELY WITH RESPECT TO THE CORRUGATIONS, (C) PROFILE-CONTOURING SAID FLAT CORRUGATED METAL SHEET, (D) EXPANDING SAID PROFILE-CONTOURED CORRUGATED METAL SHEET OVER A PREFORMED INNER SHELL, (E) SECURING RESULTING MULTI-CONTOURED CORRUGATED METAL SHEET TO SAID INNER SHELL, AND (F) PROVIDING AN OUTER SHELL OVER SAID MULTI-CONTOURED CORRUGATED METAL SHEET.
References Cited (Backward Citations)
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Cited
US2686957A
Cited
US2892253A
Cited
US2927369A
Cited
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Cited
US3043103A
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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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |