Patent US3377699A successfully refreshed from Google Patents.
US3377699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidized bed coating a core containing metal board, including circuit forming, core wiring and connecting steps
Assignee: AT&T Inc
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Filing: 1965-05-03
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Granted: 1968-04-16
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Dinella Donald
- 👤 Kirschenbaum Bernard
- 👤 Eckart F Schutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:47
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/05; H05K1/056; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069; Y10T29/49117; Y10T29/49124; Y10T29/49128; Y10T29/4913; Y10T29/49826; Y10T29/49888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE METHOD OF FORMING A PRINTED CIRCUIT BOARD, WHICH COMPRISES FORMING AN OPENING IN A METAL PLATE, FITTING AN APPERTURED MAGNETIC CORE EDGEWISE INTO SAID OPENING SO THAT THE APERTURE IS EXPOSED ABOVE ONE FACE OF SAID PLATE, EXPOSING SAID PLATE AND SAID CORE TO A FLUIDIZED BED OF PLASTIC POWDER AND COVERING THE PLATE AND THE SURFACE OF THE APERTURE IN SAID CORE WHILE LEAVING A HOLE, PERMITTING THE FLUIDIZED POWDER TO HARDEN SO AS TO FORM A COATING ON THE PLATE AND CORE FORMING PRINTED WIRING ON SAID COATING, THREADING SAID CORE WITH A CONDUCTOR, AND CONNECTING THE CONDUCTOR TO SAID WIRING.
Claim 2
Independent Claim
104 words
THE METHOD OF FORMING A PRINTED CIRCUIT BOARD, WHICH COMPRISES FORMING AN OPENING IN A METAL PLATE, FITTING AN APPERTURED MAGNETIC CORE EDGEWISE INTO SAID OPENING SO THAT THE APERTURE IS EXPOSED ABOVE ONE FACE OF SAID PLATE, EXPOSING SAID PLATE AND SAID CORE TO A FLUIDIZED BED OF PLASTIC POWDER AND COVERING THE PLATE AND THE SURFACE OF THE APERTURE IN SAID CORE WHILE LEAVING A HOLE, PERMITTING THE FLUIDIZED POWDER TO HARDEN SO AS TO FORM A COATING ON THE PLATE AND CORE FORMING PRINTED WIRING ON SAID COATING, THREADING SAID CORE WITH A CONDUCTOR, AND CONNECTING THE CONDUCTOR TO SAID WIRING.
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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) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |