US3331945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric circuits for positive picture copiers
Assignee: Minolta Co Ltd
•
Filing: 1964-08-27
•
Granted: 1967-07-18
•
Expires: 1984-08-27
Abstract
No abstract record available.
Inventors
- 👤 Ishikawa Toshio
- 👤 Noda Koji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:45
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/02; G03D15/027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
IN A POSITIVE PICTURE COPIER, THE COMBINATION COMPRISING A HEATED ROLLER, A CURRENT SOURCE, A SOURCE OF LIGHT ENERGIZED BY THE CURRENT SOURCE, A LIGHT SOURCE CIRCUIT HAVING THE SOURCE OF LIGHT NORMALLY DISCONNECTED FROM SAID CURRENT SOURCE, A HEATER CIRCUIT HAVING AT LEAST ONE HEATING ELEMENT HOUSED IN SAID ROLLER AND ELECTRICALLY COUPLED TO SAID CURRENT SOURCE,
Claim 2
Dependent Claim
58 words
IN A POSITIVE PICTURE COPIER, THE COMBINATION COMPRISING A HEATED ROLLER, A CURRENT SOURCE, A SOURCE OF LIGHT ENERGIZED BY THE CURRENT SOURCE, A LIGHT SOURCE CIRCUIT HAVING THE SOURCE OF LIGHT NORMALLY DISCONNECTED FROM SAID CURRENT SOURCE, A HEATER CIRCUIT HAVING AT LEAST ONE HEATING ELEMENT HOUSED IN SAID ROLLER AND ELECTRICALLY COUPLED TO SAID CURRENT SOURCE,
References Cited (Backward Citations)
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Cited
US1749718A
Cited
US2199639A
Cited
US2754399A
Cited
US3005109A
Cited
US3100252A
Cited
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 |