US2890260A
Expired / Lapsed
US
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Electrical conductor elements, method of making same, and contacts therefor
Assignee: 3M Co
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Filing: 1958-02-14
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Granted: 1959-06-09
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Expires: 1978-02-14
Abstract
No abstract record available.
Inventors
- 👤 Russell E Fredrick
- 👤 Clarence R Manser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:26
CPC Classifications
H; H01; H01B; H01B1/00; H10; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/851; H10N10/852; H01H; H01H1/00; H01H1/02; H10P; H10P95/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
44 words
AN ELECTRICALLY POSITIVE CONDUCTOR ELEMENT CONSISTING ESSENTIALLY OF FROM 69.9% TO 72.0% TELLURIUM BY WEIGHT, AND THE BALANCE SUBSTANTIALLY ALL MANGANESE, AND IN WHICH ANY DELETERIOUS IMPURITY PRESENT DOES NOT EXCEED AN ORDER OF MAGNITUDE OF 0.01% BY WEIGHT OF SAID TELLURIUM AND MANGANESE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |