US3170382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic developing machine
Assignee: Agfa Gevaert NV
•
Filing: 1961-01-16
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Granted: 1965-02-23
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Expires: 1981-01-16
Abstract
No abstract record available.
Inventors
- 👤 Schwab Richard
- 👤 Birk Rudolf
- 👤 Kaufer Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:56
CPC Classifications
F; F16; F16C; F16C13/00; G; G03; G03D; G03D5/00; G03D5/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
FOR USE IN A MACHINE FOR DEVELOPING LIGHT-SENSITIVE MATERIALS, IN COMBINATION, A HOLLOW CYLINDER HAVING A PERFORATED CYLINDRICAL WALL; MEANS SUPPORTING SAID CYLINDER FOR ROTATION ABOUT ITS AXIS; A LAYER OF FELT COVERING SAID CYLINDRICAL WALL; AND A YIELDABLE, PLASTIC, CYLINDRICAL SHEET SURROUNDING AND ENGAGING SAID LAYER OF FELT AND HAVING INWARDLY EXTENDING, SHORT TUBULAR PORTIONS EXTENDING INTO THE LAYER OF FELT AND DEFINING PERFORATIONS WHICH PASS THROUGH THE PLASTIC SHEET SO THAT A TREATING LIQUID SUPPLIED TO THE INTERIOR OF SAID CYLINDER WILL FLOW THROUGH THE PERFORATED CYLINDRICAL WALL THEREOF INTO SAID LAYER OF FELT AND FROM THE LATTER THROUGH THE TUBULAR PORTIONS OF SAID SHEET TO THE EXTERIOR SURFACE THEREOF TO BE APPLIED TO LIGHT-SENSITIVE MATERIAL ENGAGING THE EXTERIOR SURFACE OF SAID SHEET.
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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 |