Patent US3396461A successfully refreshed from Google Patents.
US3396461A
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US
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Printed circuit board and method of manufacture thereof
Assignee: Engelhard Industries Inc
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Filing: 1964-11-18
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Granted: 1968-08-13
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Expires: 1984-11-18
Abstract
No abstract record available.
Inventors
- 👤 Howard E Spooner
- 👤 Adolph G Bergmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:35
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3405; H01; H01B; H01B1/00; H01H; H01H11/00; H01H11/04; H01H11/06; H01R; H01R12/00; H01R12/70; H01R12/71; H01R12/72; H01R12/722; H01R12/82; H01R12/7005; H01R12/7011; H01R12/707; H05K2201/00; H05K2201/09; H05K2201/09145; H05K2201/09154; H05K2201/10; H05K2201/10613; H05K2201/10742; H05K2201/1075; H05K2201/10757; H05K2201/10886; H05K2201/10924; H05K3/40; H05K3/4007; H05K3/4015; Y; Y10; Y10S; Y10S439/00; Y10S439/951; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121; Y10T29/49789; Y10T29/4979; Y10T29/49799
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2258610A
Cited
US2944329A
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US2993188A
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US3203076A
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US3153840A
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US3054172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |