US3368892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of copying utilizing an infrared-absorptive image formed by electrostatic attraction
Assignee: 3M Co
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Filing: 1967-06-12
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Granted: 1968-02-13
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Expires: 1987-06-12
Abstract
No abstract record available.
Inventors
- 👤 Owen Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:20
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/48; C; C01; C01B; C01B33/00; C01B33/08; C01B33/10; C01B33/103; C07; C07D; C07D471/00; C07D471/02; C07D471/04; G; G03; G03C; G03C1/00; G03C1/005; G03C1/49; G03C1/52; G03C1/64; G03C1/705; G03C5/00; G03C5/56; G03G; G03G5/00; G03G5/153; G03G9/00; G03G9/08; G03G9/09; G03G9/0926; Y; Y10; Y10S; Y10S159/00; Y10S159/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |