US3045644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-color electrostatic printing apparatus
Assignee: Xerox Corp
•
Filing: 1957-06-06
•
Granted: 1962-07-24
•
Expires: 1977-06-06
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Schwertz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:01
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0142; G03G15/0147; G03G15/0152; G03G15/0105; G03G15/011; G03G15/0163; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2221776A
Cited
US2297691A
Cited
US2357809A
Cited
US2703280A
Cited
US2777745A
Cited
US2761416A
Cited
US2803177A
Cited
US2807233A
Cited
US2726940A
Cited
US2914403A
Cited
US2890968A
Cited
US2857290A
Cited
US2846333A
Cited
US2879397A
Cited
US2822779A
Cited
US2919967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |