Patent US3740835A successfully refreshed from Google Patents.
Patent US3234871A successfully refreshed from Google Patents.
US3234871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic liquid control and scanning device for duplicating machines
Assignee: Individual
•
Filing: 1963-09-17
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Granted: 1966-02-15
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Expires: 1983-09-17
Abstract
No abstract record available.
Inventors
- 👤 Robert E Ostwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:45
CPC Classifications
B; B41; B41L; B41L39/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN A DUPLICATING MACHINE HAVING A MASTER CYLINDER, A BLANKET CYLINDER AN IMPRESSION CYLINDER, MEANS FOR FEEDING SHEET MATERIAL BETWEEN THE BLANKET CYLINDER AND THE IMPRESSION CYLINDER, AN INK SUPPLY, A MASTER ON SAID MASTER CYLINDER, MEANS FOR TRANSFERRING INK FROM THE INK SUPPLY TO THE MASTER, A WATER SUPPLY, MEANS FOR TRANSFERRING WATER FROM THE WATER SUPPLY TO THE MASTER, A CONTROL AREA ON SAID MASTER RESPONSIVE TO THE RELATIVE AMOUNTS OF WATER AND INK TRANSFERRED TO THE MASTER, MEANS FOR SENSING THE REFLECTIVITY OF SAID CONTROL AREA, MEANS FOR CONTROLLING THE SUPPLY OF WATER TO THE WATER SUPPLY, MEANS FOR CONTROLLING THE SUPPLY OF INK TO THE
Claim 2
Dependent Claim
109 words
IN A DUPLICATING MACHINE HAVING A MASTER CYLINDER, A BLANKET CYLINDER AN IMPRESSION CYLINDER, MEANS FOR FEEDING SHEET MATERIAL BETWEEN THE BLANKET CYLINDER AND THE IMPRESSION CYLINDER, AN INK SUPPLY, A MASTER ON SAID MASTER CYLINDER, MEANS FOR TRANSFERRING INK FROM THE INK SUPPLY TO THE MASTER, A WATER SUPPLY, MEANS FOR TRANSFERRING WATER FROM THE WATER SUPPLY TO THE MASTER, A CONTROL AREA ON SAID MASTER RESPONSIVE TO THE RELATIVE AMOUNTS OF WATER AND INK TRANSFERRED TO THE MASTER, MEANS FOR SENSING THE REFLECTIVITY OF SAID CONTROL AREA, MEANS FOR CONTROLLING THE SUPPLY OF WATER TO THE WATER SUPPLY, MEANS FOR CONTROLLING THE SUPPLY OF INK TO THE
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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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |