US3280717A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic developing machines
Assignee: Hall Harding Ltd
•
Filing: 1963-11-20
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Granted: 1966-10-25
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Expires: 1983-11-20
Abstract
No abstract record available.
Inventors
- 👤 Bungay Jeffery Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:04
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A DEVELOPING MACHINE FOR THE HEAT TREATMENT OF HEAT DEVELOPABLE LIGHT SENSITIVE MATERIAL, MEANS DEFINING A PRESCRIBED PATH THROUGH SAID MACHINE FOR THE MATERIAL TO BE HEATED, A DEVELOPING ZONE IN SAID PATH FREE OF MATERIAL GUIDING AND SUPPORTING ELEMENTS, RADIANT HEAT EMITTING MEANS IN SAID DEVELOPING ZONE AND IN CLOSE PROXIMITY TO SAID PATH, AND GUIDING ELEMENTS FOR GUIDING SAID MATERIAL ALONG SAID PATH UP TO AND AWAY FROM SAID DEVELOPING ZONE.
Claim 2
Dependent Claim
74 words
IN A DEVELOPING MACHINE FOR THE HEAT TREATMENT OF HEAT DEVELOPABLE LIGHT SENSITIVE MATERIAL, MEANS DEFINING A PRESCRIBED PATH THROUGH SAID MACHINE FOR THE MATERIAL TO BE HEATED, A DEVELOPING ZONE IN SAID PATH FREE OF MATERIAL GUIDING AND SUPPORTING ELEMENTS, RADIANT HEAT EMITTING MEANS IN SAID DEVELOPING ZONE AND IN CLOSE PROXIMITY TO SAID PATH, AND GUIDING ELEMENTS FOR GUIDING SAID MATERIAL ALONG SAID PATH UP TO AND AWAY FROM SAID DEVELOPING ZONE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |