US3253207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring apparatus
Assignee: —
•
Filing: —
•
Granted: 1966-05-24
•
Expires: 1983-05-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:02
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A MEASURING APPARATUS FOR MEASURING AN ELECTROSTATIC FIELD, IN COMBINATION, A PAIR OF SPACED CAPACITOR PLATES; RESISTANCE MEANS INTERCONNECTING SAID CAPACITOR PLATES; A PAIR OF SPACED FIELD PLATES ARRANGED ON OPPOSITE SIDES OF AND SPACED FROM SAID CAPACITOR PLATES; MEANS FOR PERIODICALLY SHOR-CIRCUITING AND DISCONNECTING SAID FIELD PLATES TO AND FROM EACH OTHER; AMPLIFIER MEANS FOR AMPLIFYING A VOLTAGE CAUSED BY THE FLOW OF CAPACITANCE CURRENT THROUGH SAID RESISTANCE MEANS AT SUCH TIMES AS SAID FIELD PLATES ARE SHORT-CIRCUITED; AND CHARGING MEANS CONNECTED TO THE OUTPUT OF THE AMPLIFIER MEANS FOR CHARGING SAID FIELD PLATES, AFTER THE SAME HAVE BEEN DISCONNECTED FROM EACH OTHER, TO SUCH AN EXTENT THAT THEY ARE ELECTRICALLY NEUTRAL RELATIVE TO EACH OTHER.
Claim 2
Dependent Claim
118 words
IN A MEASURING APPARATUS FOR MEASURING AN ELECTROSTATIC FIELD, IN COMBINATION, A PAIR OF SPACED CAPACITOR PLATES; RESISTANCE MEANS INTERCONNECTING SAID CAPACITOR PLATES; A PAIR OF SPACED FIELD PLATES ARRANGED ON OPPOSITE SIDES OF AND SPACED FROM SAID CAPACITOR PLATES; MEANS FOR PERIODICALLY SHOR-CIRCUITING AND DISCONNECTING SAID FIELD PLATES TO AND FROM EACH OTHER; AMPLIFIER MEANS FOR AMPLIFYING A VOLTAGE CAUSED BY THE FLOW OF CAPACITANCE CURRENT THROUGH SAID RESISTANCE MEANS AT SUCH TIMES AS SAID FIELD PLATES ARE SHORT-CIRCUITED; AND CHARGING MEANS CONNECTED TO THE OUTPUT OF THE AMPLIFIER MEANS FOR CHARGING SAID FIELD PLATES, AFTER THE SAME HAVE BEEN DISCONNECTED FROM EACH OTHER, TO SUCH AN EXTENT THAT THEY ARE ELECTRICALLY NEUTRAL RELATIVE TO EACH OTHER.
References Cited (Backward Citations)
US2637010A
Cited
US2815483A
Cited
US2663842A
Cited
US1720662A
Cited
US2189352A
Cited
US2432089A
Cited
US2381990A
Cited
US2449068A
Cited
US2587156A
Cited
US2579277A
Cited
US2843736A
Cited
US2836735A
Cited
US2820947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |