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US3171741A
Expired / Lapsed
US
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Printed wiring layout process
Assignee: General Dynamics Corp
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Filing: 1958-06-16
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Granted: 1965-03-02
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Frank E Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:32
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/0002; H05K2203/00; H05K2203/05; H05K2203/0548; H05K2203/056
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
64 words
A PROCESS FOR MAKING PRINTED CIRCUIT CARD ARTWORK, THE STEPS COMPRISING: COATING A DIMENSIONALLY STABLE BASE IN A PREDETERMINED PATTERN WITH A CONTRASTING REMOVABLE EMULSION, REMOVING A SELECTED PORTION OF SAID REMOVABLE EMULSION FROM SAID PREDETERMINED PATTERN LEAVING ONLY A REQUIRED PORTION OF SAID PREDETERMINED PATTERN, AND SELECTIVELY INTERCONNECTING SAID REQUIRED PORTION OF SAID PREDETERMINED PATTERN WITH CONDUCTOR PATHS THAT CONTRAST TO SAID BASE.
Claim 2
Dependent Claim
64 words
A PROCESS FOR MAKING PRINTED CIRCUIT CARD ARTWORK, THE STEPS COMPRISING: COATING A DIMENSIONALLY STABLE BASE IN A PREDETERMINED PATTERN WITH A CONTRASTING REMOVABLE EMULSION, REMOVING A SELECTED PORTION OF SAID REMOVABLE EMULSION FROM SAID PREDETERMINED PATTERN LEAVING ONLY A REQUIRED PORTION OF SAID PREDETERMINED PATTERN, AND SELECTIVELY INTERCONNECTING SAID REQUIRED PORTION OF SAID PREDETERMINED PATTERN WITH CONDUCTOR PATHS THAT CONTRAST TO SAID BASE.
Claim 3
Dependent Claim
20 words
THE PROCESS DEFINED IN CLAIM 1 FURTHER INCLUDING THE STEP OF PHOTOGRAPHICALLY REPRODUCING SAID BASE AS PREPARED IN CLAIM 1.
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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |