Patent US2942973A successfully refreshed from Google Patents.
US2942973A
Expired / Lapsed
US
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Method of making drawings
Assignee: Individual
•
Filing: 1957-09-11
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Granted: 1960-06-28
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Expires: 1977-09-11
Abstract
No abstract record available.
Inventors
- 👤 Russell M Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:17
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/0002; H05K2203/00; H05K2203/05; H05K2203/0548; H05K2203/056
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE METHOD OF MAKING MASTER DRAWINGS FOR USE IN PREFABRICATED CIRCUITRY WHICH CONSISTS OF FIRST PUNCHING A PLURALITY OF IRREGULARLY SPACED HOLES IN WHITE REFLECTIVE BASE MATERIAL, SAID HOLES BEING OF SUFFICIENT SIZE SO AS TO REPRESENT JUNCTION POINTS OF CIRCUITS ON BOTH SIDES OF A PREFABRICATED CIRCUITRY BOARD, THEN APPLYING VARIOUS CONFIGURATIONS OF OPAQUE ADHESIVE TAPE TO BOTH SIDES OF SAID BASE MATERIAL, SAID CONFIGURATIONS OF OPAQUE ADHESIVE TAPE INCLUDING STRIPS CONTIGUOUS TO A PORTION OF SAID HOLES, WHEREBY SAID TAPE REPRESENTS AN ELECTRICAL CONDUCTOR ON A PREFABRICATED CIRCUIT BOARD, AND THEN SUCCESSIVELY PHOTOGRAPHING EACH SIDE OF SAID BASE MATERIAL WHILE SUPERIMPOSED AGAINST A DARK BACKGROUND TO PROVIDE PHOTO-NEGATIVES WHICH SERVE AS MASTER DRAWINGS.
Claim 2
Independent Claim
115 words
THE METHOD OF MAKING MASTER DRAWINGS FOR USE IN PREFABRICATED CIRCUITRY WHICH CONSISTS OF FIRST PUNCHING A PLURALITY OF IRREGULARLY SPACED HOLES IN WHITE REFLECTIVE BASE MATERIAL, SAID HOLES BEING OF SUFFICIENT SIZE SO AS TO REPRESENT JUNCTION POINTS OF CIRCUITS ON BOTH SIDES OF A PREFABRICATED CIRCUITRY BOARD, THEN APPLYING VARIOUS CONFIGURATIONS OF OPAQUE ADHESIVE TAPE TO BOTH SIDES OF SAID BASE MATERIAL, SAID CONFIGURATIONS OF OPAQUE ADHESIVE TAPE INCLUDING STRIPS CONTIGUOUS TO A PORTION OF SAID HOLES, WHEREBY SAID TAPE REPRESENTS AN ELECTRICAL CONDUCTOR ON A PREFABRICATED CIRCUIT BOARD, AND THEN SUCCESSIVELY PHOTOGRAPHING EACH SIDE OF SAID BASE MATERIAL WHILE SUPERIMPOSED AGAINST A DARK BACKGROUND TO PROVIDE PHOTO-NEGATIVES WHICH SERVE AS MASTER DRAWINGS.
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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |