Patent US3709733A successfully refreshed from Google Patents.
US3709733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite panel structure having mounting inserts therein
Assignee: CRAIG SYST CORP
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Filing: 1970-06-26
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Granted: 1973-01-09
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Expires: 1990-06-26
Abstract
Abstract A composite panel structure comprising rigid foam slabs each enclosed by a jacket bonded thereto, the jacketed slabs being arranged side by side in edge-abutting relation to form a core. Outer skins are bounded to opposite sides of the core. Mounting inserts are potted in cavities in the core wherever required.
Inventors
- 👤 S Mautner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:01
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/24; E04C2/243; F; F16; F16B; F16B5/00; F16B5/01; Y; Y10; Y10T; Y10T428/00; Y10T428/18; Y10T428/183; Y10T428/187; Y10T428/23; Y10T428/233; Y10T428/24; Y10T428/24149; Y10T428/24157; Y10T428/24174; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249987; Y10T428/24999
Claims Analysis
Total Claims: 0
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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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |