Patent US3252098A successfully refreshed from Google Patents.
US3252098A
Expired / Lapsed
US
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Waveform shaping circuit
Assignee: International Business Machines Corp
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Filing: 1961-11-20
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Granted: 1966-05-17
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Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Carl E Schlaepfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:58
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/10009; H; H03; H03K; H03K5/00; H03K5/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
APPARATUS FOR REPRODUCING MAGNETICALLY RECORDED INFORMATION IN THE FORM OF ELECTRIC PULSES, COMPRISING MAGNETIC READBACK APPARATUS PRODUCING PULSES OF GIVEN WIDTH, AN ELECTRIC PULSE MODIFYING NETWORK COUPLED TO SAID READBACK APPARATUS AND RESPONSIVE TO SAID PULSE OF GIVEN WIDTH, SAID NETWORK COMPRISING TWO PARALLEL BRANCHES TO THE INPUTS OF WHICH SAID PULSES OF GIVEN WIDTH ARE APPLIED, ONE OF SAID BRACHES INCLUDING DIFFERENTIATING MEANS, SUMMING MEANS COUPLED TO THE OUTPUTS OF SAID BRANCHES FOR ALGEBRICALLY COMBINING THE OUT-
Claim 2
Dependent Claim
78 words
APPARATUS FOR REPRODUCING MAGNETICALLY RECORDED INFORMATION IN THE FORM OF ELECTRIC PULSES, COMPRISING MAGNETIC READBACK APPARATUS PRODUCING PULSES OF GIVEN WIDTH, AN ELECTRIC PULSE MODIFYING NETWORK COUPLED TO SAID READBACK APPARATUS AND RESPONSIVE TO SAID PULSE OF GIVEN WIDTH, SAID NETWORK COMPRISING TWO PARALLEL BRANCHES TO THE INPUTS OF WHICH SAID PULSES OF GIVEN WIDTH ARE APPLIED, ONE OF SAID BRACHES INCLUDING DIFFERENTIATING MEANS, SUMMING MEANS COUPLED TO THE OUTPUTS OF SAID BRANCHES FOR ALGEBRICALLY COMBINING THE OUT-
References Cited (Backward Citations)
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US2895111A
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US3026480A
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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) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |