US2990310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated printed circuit board
Assignee: Unisys Corp
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Filing: 1960-05-11
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Granted: 1961-06-27
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Expires: 1980-05-11
Abstract
No abstract record available.
Inventors
- 👤 Chan Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:09
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/11; H05K1/115; H05K3/00; H05K3/40; H05K3/42; H05K3/429; H05K3/46; H05K3/4644; H05K3/4652; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; H05K2201/09; H05K2201/09818; H05K2201/09845; H05K2203/00; H05K2203/06; H05K2203/063; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
THE METHOD OF MAKING AN ELECTRICAL UNIT INCLUDING A PLURALITY OF CIRCUITS ON A LAMINATED MOUNTING BOARD COMPRISING THE STEPS OF AFFIXING A PAIR OF CIRCUIT TERMINALS RESPECTIVELY TO THE OPPOSITE SIDES OF A DIELECTRIC LAMINA AROUND THE OPPOSITE ENDS OF A HOLE IN THE LAMINA, AFFIXING A CIRCUIT TERMINAL TO ONE SIDE ONLY OF A SECOND LAMINA AROUND A HOLE IN THE SECOND LAMINA LARGER IN DIAMETER THAN THE HOLE IN THE FIRST LAMINA, BONDING THE LAMINAE FLAT TOGETHER WITH ONE OF THE TERMINALS OF THE FIRST LAMINA AGAINST THE OTHER SIDE OF THE SECOND LAMINA AND WITH THE HOLES SUBSTANTIALLY ALIGNED SO THAT AN INNER MARGIN OF THE INTERMEDIATE TERMINAL IS EXPOSED AS A LAND BETWEEN THE HOLES, AND THEREAFTER ELECTRO-PLATING THE TERMINALS TO FORM CONDUCTING BRIDGES BETWEEN THE LAND OF THE INTERMEDIATE TERMINAL AND THE OUTER TERMINALS.
Claim 2
Independent Claim
140 words
THE METHOD OF MAKING AN ELECTRICAL UNIT INCLUDING A PLURALITY OF CIRCUITS ON A LAMINATED MOUNTING BOARD COMPRISING THE STEPS OF AFFIXING A PAIR OF CIRCUIT TERMINALS RESPECTIVELY TO THE OPPOSITE SIDES OF A DIELECTRIC LAMINA AROUND THE OPPOSITE ENDS OF A HOLE IN THE LAMINA, AFFIXING A CIRCUIT TERMINAL TO ONE SIDE ONLY OF A SECOND LAMINA AROUND A HOLE IN THE SECOND LAMINA LARGER IN DIAMETER THAN THE HOLE IN THE FIRST LAMINA, BONDING THE LAMINAE FLAT TOGETHER WITH ONE OF THE TERMINALS OF THE FIRST LAMINA AGAINST THE OTHER SIDE OF THE SECOND LAMINA AND WITH THE HOLES SUBSTANTIALLY ALIGNED SO THAT AN INNER MARGIN OF THE INTERMEDIATE TERMINAL IS EXPOSED AS A LAND BETWEEN THE HOLES, AND THEREAFTER ELECTRO-PLATING THE TERMINALS TO FORM CONDUCTING BRIDGES BETWEEN THE LAND OF THE INTERMEDIATE TERMINAL AND THE OUTER TERMINALS.
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) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |