US3432329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erasure-proof development of electrostatic images
Assignee: Gevaert Photo Producten NV
•
Filing: 1964-05-18
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Granted: 1969-03-11
•
Expires: 1984-05-18
Abstract
No abstract record available.
Inventors
- 👤 Walter August Van Den Heuvel
- 👤 Johan Eugeen Vanhaist
- 👤 Jozef Leonard Van Engeland
- 👤 Noel Jozef De Volder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:59
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; B01J13/025; B41; B41M; B41M1/00; B41M1/26; B41M1/36; B41M5/00; B41M5/124; B41M5/132; B41M5/155; B41M5/165; G; G03; G03G; G03G13/00; G03G13/06; G03G13/10; G03G15/00; G03G15/06; G03G15/10; G03G17/00; G03G17/02; G03G9/00; G03G9/06; G03G9/08; G03G9/12; G03G9/122; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249994; Y10T428/249995
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3001872A
Cited
US3080251A
Cited
US3309990A
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US3245381A
Cited
US3285741A
Cited
US3272644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |