Patent US2671156A successfully refreshed from Google Patents.
US2671156A
Expired / Lapsed
US
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Method of producing electrical crystal-contact devices
Assignee: Hazeltine Research Inc
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Filing: 1951-10-10
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Granted: 1954-03-02
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Expires: 1971-10-10
Abstract
No abstract record available.
Inventors
- 👤 Douglas Ronald Walter
- 👤 Aubrey O E Lindell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:53
CPC Classifications
H; H10; H10P; H10P10/00; G; G01; G01R; G01R31/00; G01R31/26; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
THE METHOD OF PRODUCING AN ELECTRIC CRYSTAL-CONTACT DEVICE COMPRISING: PASSING THROUGH A CRYSTALLINE BODY OF GERMANIUM AND A CONTACT ELEMENT INCLUDING A PORTION COMPRISING GOLD MAINTAINED IN INTIMATE CONTACT WITH SAID BODY AN ELECTRIC CURRENT OF A HIGHER ORDER OF MAGNI-
Claim 2
Independent Claim
41 words
THE METHOD OF PRODUCING AN ELECTRIC CRYSTAL-CONTACT DEVICE COMPRISING: PASSING THROUGH A CRYSTALLINE BODY OF GERMANIUM AND A CONTACT ELEMENT INCLUDING A PORTION COMPRISING GOLD MAINTAINED IN INTIMATE CONTACT WITH SAID BODY AN ELECTRIC CURRENT OF A HIGHER ORDER OF MAGNI-
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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) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |