US3574103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated cellular material form
Assignee: United States Atomic Energy Commission
•
Filing: 1968-09-06
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Granted: 1971-04-06
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Expires: 1988-09-06
Abstract
Abstract A CELLULAR MATERIAL FORM HAVING A CORE FORMED OF A PLURALITY OF CORRUGATED LAMINAR SHEET ELEMENTS, IN WHICH APICES OF CORRUGATIONS ON AT LEAST ONE SIDE OF A FIRST SHEET ARE NOTCHED TRANSVERSELY TO RECEIVE AND INTERLOCK WITH APICES OF THE CORRUGATIONS OF A SECOND SHEET PROVIDING A PLURALITY OF INTERCONNECTED OR CLOSED CELLS IN A LOW DENSITY CONFIGURATION WHICH FITTED TOGETHER UNDER COMPRESSION IS SEMI-RIGID OR IS RIGID AND OF HIGH STRENGTH TO WEIGHT RATIO WHEN APPROPRIATELY BONDED.
Inventors
- 👤 Aaron Latkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:08
CPC Classifications
B; B65; B65D; B65D65/00; B65D65/38; B65D65/44; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/234; Y10T428/24; Y10T428/24149; Y10T428/24273; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24702; Y10T428/24711; Y10T428/24719
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |