US3170367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic enlarger
Assignee: Agfa Gevaert NV
•
Filing: 1961-05-10
•
Granted: 1965-02-23
•
Expires: 1981-05-10
Abstract
No abstract record available.
Inventors
- 👤 Wick Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:32
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A PHOTOGRAPHIC ENLARGER, IN COMBINATION, A SUPPORT HAVING A SURFACE ADAPTED TO RECEIVE AN IMAGE TO BE OBSERVED AT SAID SURFACE BY THE OPERATOR AND THEN REPRODUCED ON LIGHT-SENSITIVE PRINTING PAPER CARRIED BY SAID SURFACE, SAID SUPPORT HAVING A TRANSPARENT PORTION; LIGHT-MEASURING MEANS LOCATED ADJACENT SAID TRANSPARENT PORTION AT THE SIDE OF SAID SUPPORT OPPOSITE FROM SAID SURFACE THEREOF FOR MEASURING AT LEAST PART OFTHE LIGHT PASSING THROUGH SAID TRANSPARENT PORTION OF SAID SUPPORT TO SIAD OPPOSITE SIDE THEREOF, SAID LIGHT-MEASURING MEANS FORMING PART OF A PHOTOELECTRIC CONTROL DIVICE FOR CONTROLLING THE EXPOSURE OF THE PRINTING PAPER; AND INDICATING MEANS CARRIED BY SAID LIGHT-MEASURING MEANS FOR INDICATING AT SAID SURFACE OF SAID TRANSPARENT PORTION OF SAID SUPPORT THE PART OF SAID TRANSPARENT PORTION THROUGH WHICH LIGHT PASSES TO BE MEASURED BY SAID LIGHT-MEASURING MEANS.
Claim 2
Dependent Claim
135 words
IN A PHOTOGRAPHIC ENLARGER, IN COMBINATION, A SUPPORT HAVING A SURFACE ADAPTED TO RECEIVE AN IMAGE TO BE OBSERVED AT SAID SURFACE BY THE OPERATOR AND THEN REPRODUCED ON LIGHT-SENSITIVE PRINTING PAPER CARRIED BY SAID SURFACE, SAID SUPPORT HAVING A TRANSPARENT PORTION; LIGHT-MEASURING MEANS LOCATED ADJACENT SAID TRANSPARENT PORTION AT THE SIDE OF SAID SUPPORT OPPOSITE FROM SAID SURFACE THEREOF FOR MEASURING AT LEAST PART OFTHE LIGHT PASSING THROUGH SAID TRANSPARENT PORTION OF SAID SUPPORT TO SIAD OPPOSITE SIDE THEREOF, SAID LIGHT-MEASURING MEANS FORMING PART OF A PHOTOELECTRIC CONTROL DIVICE FOR CONTROLLING THE EXPOSURE OF THE PRINTING PAPER; AND INDICATING MEANS CARRIED BY SAID LIGHT-MEASURING MEANS FOR INDICATING AT SAID SURFACE OF SAID TRANSPARENT PORTION OF SAID SUPPORT THE PART OF SAID TRANSPARENT PORTION THROUGH WHICH LIGHT PASSES TO BE MEASURED BY SAID LIGHT-MEASURING MEANS.
References Cited (Backward Citations)
US2201606A
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US2444675A
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US2668474A
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US2800834A
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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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |