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US 2,623,641 A · Inventors: SHIELD LANSING P

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Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted December 30, 1952. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by December 30, 1969.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledOctober 25, 1947
GrantedDecember 30, 1952
Term endedDecember 30, 1969
Application number—
Classification (CPC)A47F1/12
Length6 pages

Timeline

Timeline From USPTO dates

19481951195419571960196319661969Application filedOct 25, 1947Patent grantedDec 30, 1952Term endedDec 30, 1969

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