US2844123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belt development electrode
Assignee: Xerox Corp
•
Filing: 1955-06-16
•
Granted: 1958-07-22
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Expires: 1975-06-16
Abstract
No abstract record available.
Inventors
- 👤 Richard E Hayford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:12
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0803
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1362518A
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US2636471A
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US2573881A
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US2752833A
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US2725304A
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US2756676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |