Patent US2449078A successfully refreshed from Google Patents.
Patent US3295117A successfully refreshed from Google Patents.
US3295117A
Expired / Lapsed
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Position sensing apparatus
Assignee: AT&T Inc
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Filing: 1963-03-21
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Granted: 1966-12-27
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Expires: 1983-03-21
Abstract
No abstract record available.
Inventors
- 👤 Cyrus F Ault
- 👤 Iii Samuel F Rise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:06
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G06; G06K; G06K7/00; G06K7/01; G06K7/015
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A TRANSDUCER FOR DETECTING THE CENTERPOINT OF A LINE BETWEEN A PAIR OF OPPOSITE MAGNETIC POLES COMPRISING THREE LEG MEMBERS OF MAGNETIC MATERIAL DEFINING TWO ADJACENT SIGNAL TRANSLATING GAPS SEPARATED BY A DISTANCE SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN SAID MAGNETIC POLES AND SINGLE OUTPUT CIRCUIT MEANS OPERATIVELY CON-
Claim 2
Dependent Claim
49 words
A TRANSDUCER FOR DETECTING THE CENTERPOINT OF A LINE BETWEEN A PAIR OF OPPOSITE MAGNETIC POLES COMPRISING THREE LEG MEMBERS OF MAGNETIC MATERIAL DEFINING TWO ADJACENT SIGNAL TRANSLATING GAPS SEPARATED BY A DISTANCE SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN SAID MAGNETIC POLES AND SINGLE OUTPUT CIRCUIT MEANS OPERATIVELY CON-
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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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |