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2026-10-08 — Google Patents

Queries: patents.google.com/?inventor=Martin+Ruderfer (the page renders inside a shadow DOM, so no text could be extracted); Google site:patents.google.com "Martin Ruderfer" (1 hit). Patent pages were fetched by curl into research/pages/.

Found

  • US 3,077,256 A, "Typewriting apparatus with constantly rotating type disc", Martin Ruderfer, assigned to Dimensions Inc. Priority and filing 10 Jun 1960 (US35156A), published 12 Feb 1963. [web] https://patents.google.com/patent/US3077256A/en
  • Family members: DE 1239711 B ("Tastenbetaetigbare Druckeinrichtung mit einem staendig umlaufenden Typenzylinder", filed 9 Jun 1961, published 3 May 1967, applicant DIMENSIONS Inc) [web] https://patents.google.com/patent/DE1239711B/de; GB 949511 A (1964-02-12); FR 1291396 A (1962-04-20); CH 375380 A (1964-02-29); NL 111882 C.
  • Cited by: US3878782A (Coffelt 1975), US4416557A (Epson 1983), US4437776A (Canon Denshi 1984).
  • US 2,446,851 A, "Electrically operated typewriter with constantly rotating type wheel", Martin Ruderfer (Brooklyn), priority Apr 1947, issued Aug 1948. [web] https://patents.google.com/patent/US2446851A/en. Reported in the NYT patent column, 14 Aug 1948 ("2,446,851) by Martin Ruderfer of Brooklyn, N. Y.") [web] https://www.nytimes.com/1948/08/14/archives/ (Google snippet). Cited by 6 later printer patents (Prouty 1952, Florez 1954, Kleinschmidt 1959, and others).

Bearing

Historical record (priority 4): Ruderfer was a practising inventor-engineer in office machinery (rotary type-wheel printers) from 1947, and Dimensions Inc. held foreign patents in 1961-67. The Computers and Automation 1965 directory lists Dimensions, Inc., 95 Madison Ave., Hempstead, L.I., under plotters [web] https://archive.org/stream/196506_djvu (Google snippet). This matches the "Dimensions, Inc., Hempstead" affiliation on his physics papers. No physics or neutrino patent was found. The inventor search was not exhaustive (the shadow DOM blocked it), so another query by assignee "Dimensions Inc" is worth trying.