US3468249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article controlled document marking apparatus for copying machines
Assignee: Xerox Corp
•
Filing: 1967-02-03
•
Granted: 1969-09-23
•
Expires: 1987-02-03
Abstract
No abstract record available.
Inventors
- 👤 Gu-Din Tseo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:31
CPC Classifications
B; B41; B41K; B41K3/00; B41K3/02; B41K3/12; B41K3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2318465A
Cited
US2443953A
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US2802416A
Cited
US3092019A
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US3055297A
Cited
US3138098A
Cited
US3037447A
Cited
US3039385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |