US3277298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corona discharge device
Assignee: FORMFOTO Manufacturing CO
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Filing: 1964-10-05
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Granted: 1966-10-04
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Tiger Emil
- 👤 Erskine G Corman
- 👤 Kenneth R Reick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:38
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A CORONA DISCHARGE DEVICE COMPRISING, OPPOSED DIELECTRIC BODY FRAMES DEFINING A NARROW PASSAGE GAP THEREBETWEEN AFFORDING A PATH FOR PAPER TO BE ELECTROSTATICALLY CHARGED, CORONA DISCHARGE WIRES STRUNG ON SAID BODY FRAMES ACROSS SAID PASSAGE, AND SPACED APART INTEGRAL DIELECTRIC SPACER AND PAPER GUIDE RIBS ON SAID FRAMES INTERPOSED BETWEEN SAID WIRES AND SAID PATH AND EXTENDING GENERALLY DIAGONALLY RELATIVELY TO THE PATH.
Claim 2
Dependent Claim
63 words
A CORONA DISCHARGE DEVICE COMPRISING, OPPOSED DIELECTRIC BODY FRAMES DEFINING A NARROW PASSAGE GAP THEREBETWEEN AFFORDING A PATH FOR PAPER TO BE ELECTROSTATICALLY CHARGED, CORONA DISCHARGE WIRES STRUNG ON SAID BODY FRAMES ACROSS SAID PASSAGE, AND SPACED APART INTEGRAL DIELECTRIC SPACER AND PAPER GUIDE RIBS ON SAID FRAMES INTERPOSED BETWEEN SAID WIRES AND SAID PATH AND EXTENDING GENERALLY DIAGONALLY RELATIVELY TO THE PATH.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |