US3174748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic sheet hold-down
Assignee: Harris Graphics Corp
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Filing: 1963-06-17
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Granted: 1965-03-23
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Webster C Roberts
- 👤 Brandt Gotlieb Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:27
CPC Classifications
B; B41; B41F; B41F21/00; B41F21/005; H; H05; H05F; H05F3/00; H05F3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
AN ELECTROSTATIC DEVICE COMPRISING AN ELONGATED MEMBER FOR ESTABLISHING AN ELECTROSTATIC FIELD BETWEEN THE ELONGATED MEMBER AND A SECOND MEMBER, AN INSULATING COVERING FOR SAID ELONGATED MEMBER EXTENDING ABOUT SAID ELONGATED MEMBER AND HAVING MEANS OPEN ON ONE SIDE FOR EXPOSING THE ELONGATED MEMBER TO ESTABLISH THE FIELD, A CONDUCTOR ON SAID INSULATING MEMBER INTERMEDIATE THE ENDS THEREOF AND INSULATED FROM SAID ELONGATED MEMBER, AND CONNECTIONS FOR CONNECTING THE ELONGATED MEMBER TO ONE SIDE OF A HIGH VOLTAGE SUPPLY AND FOR CONNECTING SAID CONDUCTOR TO THE OTHER SIDE OF SAID HIGH VOLTAGE SUPPLY.
Claim 2
Dependent Claim
93 words
AN ELECTROSTATIC DEVICE COMPRISING AN ELONGATED MEMBER FOR ESTABLISHING AN ELECTROSTATIC FIELD BETWEEN THE ELONGATED MEMBER AND A SECOND MEMBER, AN INSULATING COVERING FOR SAID ELONGATED MEMBER EXTENDING ABOUT SAID ELONGATED MEMBER AND HAVING MEANS OPEN ON ONE SIDE FOR EXPOSING THE ELONGATED MEMBER TO ESTABLISH THE FIELD, A CONDUCTOR ON SAID INSULATING MEMBER INTERMEDIATE THE ENDS THEREOF AND INSULATED FROM SAID ELONGATED MEMBER, AND CONNECTIONS FOR CONNECTING THE ELONGATED MEMBER TO ONE SIDE OF A HIGH VOLTAGE SUPPLY AND FOR CONNECTING SAID CONDUCTOR TO THE OTHER SIDE OF SAID HIGH VOLTAGE SUPPLY.
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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |