US3411482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrographic toner development employing a clean-up electrode structure for removing unwanted background
Assignee: Varian Medical Systems Inc
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Filing: 1967-01-30
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Granted: 1968-11-19
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Expires: 1987-01-30
Abstract
No abstract record available.
Inventors
- 👤 Brodie Ivor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:40
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2956494A
Cited
US3147147A
Cited
US3154546A
Cited
US3299787A
Cited
US3345925A
Cited
US3203395A
Cited
US3342164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |