Patent US3331301A successfully refreshed from Google Patents.
US3331301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film processing magazine
Assignee: Mark Systems Inc
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Filing: 1964-09-18
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Granted: 1967-07-18
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Expires: 1984-09-18
Abstract
No abstract record available.
Inventors
- 👤 Harry N Dieffenbach
- 👤 Arthur L Nields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:16
CPC Classifications
G; G03; G03D; G03D9/00; G03D11/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
222 words
A FILM PROCESSING MAGAZINE OF THE TYPE ADAPTED TO SPOOL A PHOTOGRAPHIC FILM AND A DEVELOPER IMPREGNATED MAT TOGETHER ON A COMMON SPOOL, COMPRISING A ROLL OF MAT MATERIAL, MEANS FOR MOUNTING SAID ROLL WITHIN SAID MAGAZINE, MEANS FOR FEEDING FILM IN LIGHT-TIGHT INTEGRITY FROM A CAMERA INTO SAID MAGAZINE, A SPOOL TO RECEIVE SAID MAT AND SAID FILM, MEANS FOR ROTATING SAID SPOOL, SAID MAT AND SAID FILM BEING DISPOSED WITH THEIR RESPECTIVE EMULSION SIDE IN FACE TO FACE RELATIONSHIP, A PRESSURE ROLLER, MEANS MOUNTING SAID PRESSURE ROLLER FOR ROTATION IN THE AXIS PARALLEL WITH THE AXIS OF ROTATION OF SAID TAKEUP SPOOL, MEANS POSITIONING SAID PRESSURE ROLLER AGAINST SAID TAKE-UP SPOOL AT THE POINT OF UNION OF SAID MAT AND FILM, MEANS MAINTAINING CONSTANT PRESSURE TO SAID PRESSURE ROLLER AGAINST SAID TAKE-UP SPOOL, MEANS FORMULATING A LOOP OF FILM TO DAMPEN IRREGULARITIES OF FILM TRAVEL INTO SAID MAGAZINE AND MAINTAIN THE TENSION OF SAID FILM LEADING TO SAID TAKE-UP REEL AT A CONSTANT LEVEL, MEANS TENSIONING SAID MAT REEL TO PROVIDE A CONSTANT TENSION OF MAT BEING DRAWN ONTO SAID TAKE-UP SPOOL, COOLING AND HEATING MEANS MOUNTED WITHIN SAID MAGAZINE, MEANS TO SENSE THE TEMPERATURE OF SAID MAGAZINE AND SAID TEMPERATURE SENSING BEING ADAPTED MEANS TO CAUSE SAID HEATING AND COOLING MEANS TO BRING THE TEMPERATURE WITHIN A PREDETERMINED RANGE.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |