Patent US1267405A successfully refreshed from Google Patents.
US3090212A
Expired / Lapsed
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Sandwich panel construction
Assignee: Individual
•
Filing: 1961-09-27
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Granted: 1963-05-21
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Expires: 1981-09-27
Abstract
No abstract record available.
Inventors
- 👤 Roger A Anderson
- 👤 Robert T Swann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:42
CPC Classifications
F; F23; F23M; F23M5/00; F23M5/08; F22; F22B; F22B37/00; F22B37/02; F22B37/40; F24; F24F; F24F1/00; F24F1/0007; F24F1/0059; F24F1/0067; F24F5/00; F24F5/0007; Y; Y02; Y02B; Y02B30/00; Y02B30/54; Y10; Y10S; Y10S165/00; Y10S165/904; Y10S62/00; Y10S62/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A SANDWICH PANEL HEAT BARRIER STRUCTURE, COMPRISING: AN INTERNAL SKIN, AN EXTERNAL SKIN SPACED FROM SAID INTERNAL SKIN, A CORE ELEMENT INCLUDING A PLURALITY OF BULKHEADS DISPOSED INTERMEDIATE SAID INTERNAL AND EXTERNAL SKINS AND ATTACHED THERETO TO DIVIDE THE SPACE BETWEEN SAID SKINS INTO A PLURALITY OF LONGITUDINALLY EXTENDING CHANNELS, ABSORBENT MEANS FIXEDLY POSITIONED ADJACENT
Claim 2
Dependent Claim
55 words
A SANDWICH PANEL HEAT BARRIER STRUCTURE, COMPRISING: AN INTERNAL SKIN, AN EXTERNAL SKIN SPACED FROM SAID INTERNAL SKIN, A CORE ELEMENT INCLUDING A PLURALITY OF BULKHEADS DISPOSED INTERMEDIATE SAID INTERNAL AND EXTERNAL SKINS AND ATTACHED THERETO TO DIVIDE THE SPACE BETWEEN SAID SKINS INTO A PLURALITY OF LONGITUDINALLY EXTENDING CHANNELS, ABSORBENT MEANS FIXEDLY POSITIONED ADJACENT
References Cited (Backward Citations)
US2576843A
Cited
US3013641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |