Patent US3102990A successfully refreshed from Google Patents.
US3102990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable resistor contact
Assignee: Beckman Coulter Inc
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Filing: 1961-12-11
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Granted: 1963-09-03
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Expires: 1981-12-11
Abstract
No abstract record available.
Inventors
- 👤 Kenneth F Miller
- 👤 Sr Thomas M Place
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:12
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/12; H01B; H01B1/00; H01B1/20; H01B1/22; H01B1/24; H01C10/00; H01C10/30; H01C10/305; H01C10/306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A MOLDED VARIABLE RESISTOR CONTACT FOR USE WITH A CERMET RESISTANCE MATERIAL OR THE LIKE, CONSISTING OF IN PERCENT BY WEIGHT, DIALLYL PHTHALATE RESIN ABOUT 37, SILVER POWDER ABOUT 51, ANDGRAPHITE ABOUT 12, WITH THE SILVER
Claim 2
Dependent Claim
36 words
A MOLDED VARIABLE RESISTOR CONTACT FOR USE WITH A CERMET RESISTANCE MATERIAL OR THE LIKE, CONSISTING OF IN PERCENT BY WEIGHT, DIALLYL PHTHALATE RESIN ABOUT 37, SILVER POWDER ABOUT 51, ANDGRAPHITE ABOUT 12, WITH THE SILVER
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) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |