US3054897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of and apparatus for printing or copying by electrostatic photography
Assignee: EN Mason and Sons Ltd
•
Filing: 1957-08-16
•
Granted: 1962-09-18
•
Expires: 1977-08-16
Abstract
No abstract record available.
Inventors
- 👤 Pritchard Raymond George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:23
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/02; G03G15/0283; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/102
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2297691A
Cited
US2588699A
Cited
US2621309A
Cited
US2777957A
Cited
US2716826A
Cited
US2811465A
Cited
US2777745A
Cited
US2922883A
Cited
US2864756A
Cited
US2885556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |