Patent US4721385A successfully refreshed from Google Patents.
Patent US3472679A successfully refreshed from Google Patents.
US3472679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating surfaces
Assignee: Xerox Corp
•
Filing: 1968-11-27
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Granted: 1969-10-14
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Expires: 1988-11-27
Abstract
No abstract record available.
Inventors
- 👤 W Jr Ing Samuel
- 👤 Yuen-Sheng Chiang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:31
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/32; H01J37/32009; H01J37/32422; C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/32; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08207
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
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US3108900A
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US3290567A
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US3310424A
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US3297465A
Cited
US3296115A
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US3355371A
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US3329601A
Cited
US3275412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |