Patent US180794A successfully refreshed from Google Patents.
Patent US3700341A successfully refreshed from Google Patents.
US3700341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated board and method of making same
Assignee: Lcoa Laminating Co of America
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Filing: 1970-07-27
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Granted: 1972-10-24
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Expires: 1990-07-27
Abstract
Abstract A laminated board formed of a core of pressed wood covered with preferably aluminum foil outer layers, adhesively bonded thereto, which is useful for a back-up board when drilling printed circuit boards which is formed by drying the pressed fiber core to a low moisture contest prior to adhesively bonding the aluminum foil thereto.
Inventors
- 👤 James P Block
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:02
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/0011; H05K3/0044; H05K3/0047; B; B23; B23B; B23B35/00; B23B35/005; H05K2201/00; H05K2201/02; H05K2201/0275; H05K2201/0284; H05K2201/0293; H05K2203/00; H05K2203/01; H05K2203/0147; H05K2203/0152; H05K2203/02; H05K2203/0214; Y; Y10; Y10T; Y10T408/00; Y10T408/03; Y10T408/55; Y10T408/561; Y10T83/00; Y10T83/929; Y10T83/9309
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
14 words
The method of claim 1 wherein: said back-up board has aluminum foil bonded thereto.
References Cited (Backward Citations)
No citation records indexed.
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 |