US2629800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor signal translating device
Assignee: AT&T Inc
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Filing: 1950-04-15
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Granted: 1953-02-24
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Expires: 1970-04-15
Abstract
No abstract record available.
Inventors
- 👤 Gerald L Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
H; H10; H10D; H10D1/00; H10D1/40; H10D62/00; H10D62/10; H10D48/00; H10D48/30; H10D48/38; H10F; H10F99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
AN ASYMMETRIC ELECTRICAL TRANSLATING DEVICE COMPRISING A BODY OF P CONDUCTIVITY TYPE GERMANIUM HAVING ON ONE SURFACE THEREOF AN INTEGRAL SKIN OF N CONDUCTIVITY TYPE GERMANIUM OF THE ORDER OF 0.002 INCH THICK, A LARGE AREA OHMIC CONNECTION TO SAID BODY, AND AN OHMIC CONNECTION TO THE OUTER FACE OF SAID SKIN AND SUBSTANTIALLY COEXTENSIVE THEREWITH.
Claim 2
Dependent Claim
56 words
AN ASYMMETRIC ELECTRICAL TRANSLATING DEVICE COMPRISING A BODY OF P CONDUCTIVITY TYPE GERMANIUM HAVING ON ONE SURFACE THEREOF AN INTEGRAL SKIN OF N CONDUCTIVITY TYPE GERMANIUM OF THE ORDER OF 0.002 INCH THICK, A LARGE AREA OHMIC CONNECTION TO SAID BODY, AND AN OHMIC CONNECTION TO THE OUTER FACE OF SAID SKIN AND SUBSTANTIALLY COEXTENSIVE THEREWITH.
References Cited (Backward Citations)
US2504628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |