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Patent US3553832A successfully refreshed from Google Patents.
US3553832A
Expired / Lapsed
US
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Method of making a powder dispensing cylinder for an electrostatic powder fixing device
Assignee: Individual
•
Filing: 1969-01-10
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Granted: 1971-01-12
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Expires: 1989-01-10
Abstract
Abstract THE PRESENT INVENTION RELATES TO AN ELECTROSTATIC POWDER IMAGE PRINTING SYSTEM, MORE PARTICULARLY, TO A MAGNETIC CYLINDER FOR UNIFORMLY DISPENSING TONER POWDER IN A POWDER IMAGE FIXING DEVICE.
Inventors
- 👤 Wilhelm Knechtel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:42
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/09; G03G15/0921; H; H01; H01F; H01F7/00; H01F7/02; H01F7/0231; H01F7/0252; H01F7/0268; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |