US3343115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical resistance element
Assignee: Beckman Coulter Inc
•
Filing: 1964-12-02
•
Granted: 1967-09-19
•
Expires: 1984-12-02
Abstract
No abstract record available.
Inventors
- 👤 Whitney L Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:01
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/50; H01C10/30; H01H; H01H3/00; H01H3/02; H01H3/0213
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A RESISTANCE DEVICE COMPRISING A NONCONDUCTING BASE MEMBER; A RESISTANCE ELEMENT SUPPORTED BY SAID BASE MEMBER; A COLLECTOR ELEMENT SUPORTED BY SAID BASE MEMBER; SAID RESISTANCE ELEMENT BEING LONGER THAN SAID COLLECTOR ELEMENT, EACH OF SAID ELEMENTS HAVING END POINTS SO ARRANGED THAT SAID END POINTS OF SAID RESISTANCE ELEMENT EXTEND BEYOND SAID END POINTS OF SAID COLLECTOR ELEMENT; ELECTRICAL TERMINALS CONNECTED TO SAID RESISTANCE ELEMENT AT POINTS LYING INTERMEDIATE THE END POINTS OF SAID COLLECTOR ELEMENT; AND A MOVABLE WIPER TRAVERSING IN SLIDABLE CONTACT BOTH SAID RESISTANCE ELEMENT AND SAID COLLECTOR ELEMENT DURING PART OF ITS TRAVEL BUT ONLY SAID RESISTANCE ELEMENT DURING ANOTHER PART OF ITS TRAVEL.
Claim 2
Dependent Claim
109 words
A RESISTANCE DEVICE COMPRISING A NONCONDUCTING BASE MEMBER; A RESISTANCE ELEMENT SUPPORTED BY SAID BASE MEMBER; A COLLECTOR ELEMENT SUPORTED BY SAID BASE MEMBER; SAID RESISTANCE ELEMENT BEING LONGER THAN SAID COLLECTOR ELEMENT, EACH OF SAID ELEMENTS HAVING END POINTS SO ARRANGED THAT SAID END POINTS OF SAID RESISTANCE ELEMENT EXTEND BEYOND SAID END POINTS OF SAID COLLECTOR ELEMENT; ELECTRICAL TERMINALS CONNECTED TO SAID RESISTANCE ELEMENT AT POINTS LYING INTERMEDIATE THE END POINTS OF SAID COLLECTOR ELEMENT; AND A MOVABLE WIPER TRAVERSING IN SLIDABLE CONTACT BOTH SAID RESISTANCE ELEMENT AND SAID COLLECTOR ELEMENT DURING PART OF ITS TRAVEL BUT ONLY SAID RESISTANCE ELEMENT DURING ANOTHER PART OF ITS TRAVEL.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |