US3574660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orbital developer stream development
Assignee: Xerox Corp
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Filing: 1966-07-25
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Granted: 1971-04-13
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Expires: 1986-07-25
Abstract
Abstract ELECTROSTATIC LATENT IMAGES ARE DEVELOPED BY DEVELOPER MATERIAL IN A CHAMBER HAVING A CURVED BOTTOM SURFACE BY TRANSMITTING TO THE DEVELOPER MATERIAL IN CONTACT WITH THE CHAMBER SUFFICIENT OSCILLATORY ENERGY TO CIRCULATE A STREAM OF THE DEVELOPER MATERIAL IN AN ORBITAL PATH IN A SUBSTANTIALLY VERICAL PLANE, THE OSCILLATORY ENERGY HAVING AN AXIS OF OSCILLATION PERPENDICULAR TO THE VERTICAL PLANE AND CONTAINING THE UPPER PERIPHERY OF THE STREAM OF DEVELOPER MATERIAL WITH A SURFACE BEARING AN ELECTROSTATIC LATENT IMAGE.
Inventors
- 👤 Robert J Hagenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:20
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |