US3700067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic face sheet
Assignee: McDonnell Douglas Corp
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Filing: 1970-06-01
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Granted: 1972-10-24
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Expires: 1990-06-01
Abstract
Abstract A three-dimensional acoustic porous face sheet formed from an integrally woven fabric and made rigid in a desired configuration by a resin system.
Inventors
- 👤 Richard A Dobbs
- 👤 Richard N Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:20
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/24; E04C2/30; E04C2/34; E04B2001/8423; E04B2001/8457; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
35 words
A three dimensional integral woven porous acoustic face sheet as set forth in claim 1, an impervious back panel, and ribs interconnecting said face sheet and said back panel to form a sound suppression. panel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |