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US3563097A Expired / Lapsed US ⏱️ 0.0 years remaining

Conversion of handwriting into electrical signals

Assignee: Unisys Corp
•
Filing: 1968-11-06
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Granted: 1971-02-16
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Expires: 1988-11-06
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Abstract

Abstract APPARATUS FOR CONVERTING THE ACT OF HANDSWRITING TO ELECTRICAL SIGNALS AND PARTICULARLY TO APPARATUS HAVING A TABLELIKE PROVISION FOR YIELDING TO THE PRESSURES EXERTED BY A WRITING IMPLEMENT, SUCH AS DURING THE WRITING OF A SIGNATURE, FOR TRANSDUCING SUCH PRESSURES IN TO ELECTRICAL WAVEFORMS WHICH MAY BE RECORDED OR ILLUSTRATED FOR COMPARISON AND IDENTIFICATION PURPOSES. THE APPARATUS EMPLOYS A HANDWRITING SURFACE ELASTICALLY YIELDABLE SUPPORTED BY A PAIR OF ELLIPTICALLY-SHAPED MEMBERS DISPOSED IN SPACED APART PARALLEL PLANES AND FURTHER EMPLOYS ELECTRICAL STRAIN GAGES OPERATIVELY ASSOCIATED WITH THE SUPPORTING MEMBERS FOR SENSING THE STRAINS TO WHICH THE MEMBERS ARE SUBJECTED DURING THE HANDWRITING PROCEDURE AND FOR GENERATING ELECTRICAL SIGNALS INDICATIVE THEREOF.

Inventors

  • 👤 Edwin O Roggenstein
  • 👤 Nallicheri T Viswanathan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 01:39
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/2206; G01L1/2231; G01L1/2237; G06; G06V; G06V10/00; G06V10/10; G06V10/12

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1974-02-15 1974-08-17 1975-02-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-02-15 1978-08-17 1979-02-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-02-15 1982-08-17 1983-02-16 $7700.00 Window Closed / Lapsed

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