US3247761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of printed circuit boards and the like
Assignee: Individual
•
Filing: 1963-01-21
•
Granted: 1966-04-26
•
Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Robert A Herreman
- 👤 James K Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:53
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN AN APPARATUS FOR USE IN PRODUCING PRINTED CIRCUIT BOARDS AND THE LIKE: A TABLE, SAID TABLE HAVING A STATION FOR RECEIVING AND POSITIONING A PHOTOSENSITIVE PLATE THEREON, A PLURALITY OF LIGHT PROJECTION DEVICES FOR FOCUSING A BEAM OF LIGHT OF PREDETERMINED CONFIGURATIONS AND IN A PREDETERMINED PATTERN ON SAID STATION TO SENSITIZE ON SAID PLATE A CONFIGURATION CONNECTED TO A PRECEDING SENSITIZED CONFIGURATION, ONE OF SAID DEVICES HAVING MEANS DEFINING A HORIZONTALLY POSITIONED LIGHT SLOT, ANOTHER OF SAID DEVICES HAVING MEANS DEFINING A LIGHT SLOT POSITIONED PERPENDICULARLY TO SAID FIRST LIGHT SLOT AND BEING SO POSITIONED WITH RESPECT TO SAID FIRST SLOT AS TO PROJECT AN IMAGE PERPENDICULAR AND CONNECTED TO THE IMAGE PRODUCED BY SAID FIRST SLOT, A MEANS FOR SUPPORTING SAID LIGHT PROJECTION DEVICES IN SPACED RELATION TO SAID TABLE, AND MEANS FOR MOVING SAID TABLE AND SAID LAST MENTIONED MEANS RELATIVELY ON AXES AT RIGHT ANGLES TO ONE ANOTHER IN ANY SUCCESSIVE POSITIONING OPERATION.
Claim 2
Dependent Claim
158 words
IN AN APPARATUS FOR USE IN PRODUCING PRINTED CIRCUIT BOARDS AND THE LIKE: A TABLE, SAID TABLE HAVING A STATION FOR RECEIVING AND POSITIONING A PHOTOSENSITIVE PLATE THEREON, A PLURALITY OF LIGHT PROJECTION DEVICES FOR FOCUSING A BEAM OF LIGHT OF PREDETERMINED CONFIGURATIONS AND IN A PREDETERMINED PATTERN ON SAID STATION TO SENSITIZE ON SAID PLATE A CONFIGURATION CONNECTED TO A PRECEDING SENSITIZED CONFIGURATION, ONE OF SAID DEVICES HAVING MEANS DEFINING A HORIZONTALLY POSITIONED LIGHT SLOT, ANOTHER OF SAID DEVICES HAVING MEANS DEFINING A LIGHT SLOT POSITIONED PERPENDICULARLY TO SAID FIRST LIGHT SLOT AND BEING SO POSITIONED WITH RESPECT TO SAID FIRST SLOT AS TO PROJECT AN IMAGE PERPENDICULAR AND CONNECTED TO THE IMAGE PRODUCED BY SAID FIRST SLOT, A MEANS FOR SUPPORTING SAID LIGHT PROJECTION DEVICES IN SPACED RELATION TO SAID TABLE, AND MEANS FOR MOVING SAID TABLE AND SAID LAST MENTIONED MEANS RELATIVELY ON AXES AT RIGHT ANGLES TO ONE ANOTHER IN ANY SUCCESSIVE POSITIONING OPERATION.
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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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |