US3211961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining the quantity of contaminant in a substance
Assignee: Atomic Energy of Canada Ltd AECL
•
Filing: 1963-05-03
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Granted: 1965-10-12
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Expires: 1983-05-03
Abstract
No abstract record available.
Inventors
- 👤 John G Bayly
- 👤 William H Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:43
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/314; G01J; G01J3/00; G01J3/12; G01J2003/1226; G01J2003/123; G01N2021/3148; G01N2021/3166; G01N21/35; G01N21/3504; G01N21/3563; G01N21/3577
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A RELAY SYSTEM COMPRISING A TWO-STATE RELAY, A WINDING FOR SAID RELAY, A SOURCE OF ELECTRIC CURRENT, FIRST AND SECOND PHOTOCELLS CONNECTED IN SERIES ACROSS SAID SOURCE AND PROVIDING A JUNCTION BETWEEN THE TWO CELLS, MEANS CONNECTING ONE SIDE OF SAID RELAY WINDING TO SAID JUNCTION, AT LEAST ONE CHARGE STORAGE MEANS CONNECTED TO THE OTHER SIDE OF SAID RELAY WINDING, ILLUMINATING MEANS, AND MEANS FOR ALTERNATELY ILLUMINATING SAID PHOTOCELLS TO PERMIT CURRENT TO FLOW ALTERNATELY THROUGH SAID WINDING TOWARDS AND AWAY FROM SAID JUNCTION THEREBY CAUSING SAID RELAY TO CHANGE ALTERNATELY BETWEEN ITS TWO STATES.
Claim 2
Dependent Claim
96 words
A RELAY SYSTEM COMPRISING A TWO-STATE RELAY, A WINDING FOR SAID RELAY, A SOURCE OF ELECTRIC CURRENT, FIRST AND SECOND PHOTOCELLS CONNECTED IN SERIES ACROSS SAID SOURCE AND PROVIDING A JUNCTION BETWEEN THE TWO CELLS, MEANS CONNECTING ONE SIDE OF SAID RELAY WINDING TO SAID JUNCTION, AT LEAST ONE CHARGE STORAGE MEANS CONNECTED TO THE OTHER SIDE OF SAID RELAY WINDING, ILLUMINATING MEANS, AND MEANS FOR ALTERNATELY ILLUMINATING SAID PHOTOCELLS TO PERMIT CURRENT TO FLOW ALTERNATELY THROUGH SAID WINDING TOWARDS AND AWAY FROM SAID JUNCTION THEREBY CAUSING SAID RELAY TO CHANGE ALTERNATELY BETWEEN ITS TWO STATES.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |