Patent US3224353A successfully refreshed from Google Patents.
US3224353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic contact printing apparatus
Assignee: Individual
•
Filing: 1963-09-30
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Granted: 1965-12-21
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Harold G Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:36
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/18; G03B27/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
PHOTOGRAPHIC CONTACT PRINTING APPARATUS COMPRISING A BOX CONTAINING A SOURCE OF PRINTING LIGHT, A BED ON TOP OF THE BOX FOR THE LOCATION THEREON OF PHOTOGRAPHIC PAPERS TO BE EXPOSED, A LID HINGEDLY CONNECTED TO THE BOX, A FLEXIBLE BLANKET CARRIED BY THE LID, SEALING MEANS WHICH BORDER A TRAPPED SPACE BETWEEN THE BLANKET AND THE BOX WHEN THE LID IS IN A CLOSED POSITION, A VACUUM PUMP HAVING ITS WORKING SPACE CONNECTED TO SAID TRAPPED SPACE, AND A MECHANICAL LINKAGE CONNECTING THE LID AND THE PUMP FOR ACTUATING THE PUMP TO CREATE A PARTIAL VACUUM IN SAID TRAPPED SPACE IN RESPONSE TO CLOSING MOVEMENT OF THE LID.
Claim 2
Dependent Claim
108 words
PHOTOGRAPHIC CONTACT PRINTING APPARATUS COMPRISING A BOX CONTAINING A SOURCE OF PRINTING LIGHT, A BED ON TOP OF THE BOX FOR THE LOCATION THEREON OF PHOTOGRAPHIC PAPERS TO BE EXPOSED, A LID HINGEDLY CONNECTED TO THE BOX, A FLEXIBLE BLANKET CARRIED BY THE LID, SEALING MEANS WHICH BORDER A TRAPPED SPACE BETWEEN THE BLANKET AND THE BOX WHEN THE LID IS IN A CLOSED POSITION, A VACUUM PUMP HAVING ITS WORKING SPACE CONNECTED TO SAID TRAPPED SPACE, AND A MECHANICAL LINKAGE CONNECTING THE LID AND THE PUMP FOR ACTUATING THE PUMP TO CREATE A PARTIAL VACUUM IN SAID TRAPPED SPACE IN RESPONSE TO CLOSING MOVEMENT OF THE LID.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |