US3038442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic developing apparatus
Assignee: Unisys Corp
•
Filing: 1958-12-29
•
Granted: 1962-06-12
•
Expires: 1978-12-29
Abstract
No abstract record available.
Inventors
- 👤 Richard H Jones
- 👤 William J Marczak
- 👤 John W Funk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:34
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/095; G03G15/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2297691A
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US2770556A
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US2861543A
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US2832511A
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US2843084A
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US2851373A
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US2859129A
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US2892446A
Cited
US2919672A
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US2910964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |