Patents by Inventor Betram L. Koslin

Betram L. Koslin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4943239
    Abstract: An answer recording and score sheet device includes a markable sheet arrangement with at least one surface that has answer mark guide indicia. The guide indicia define sets of first positions at which marks can be selectively made by a respondent in response to corresponding questions. The sheet arrangement also has a surface on which a number of discriminable flag indicia are formed in a determined relation with respect to the first positions. The flag indicia serve to convey correct responses in accordance with a given test form or answer key, and are of such form as to enable rapid manual or electronic grading of the chosen responses.
    Type: Grant
    Filed: May 5, 1989
    Date of Patent: July 24, 1990
    Assignee: Touchstone Applied Science Associates, Inc.
    Inventor: Betram L. Koslin