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Combined tooth cleaning and gum massaging device

US 1,833,555 A · Inventors: BELL JOHN P et al.

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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.

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Why it's free to use

  • Granted November 24, 1931. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by November 24, 1948.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJuly 9, 1930
GrantedNovember 24, 1931
Term endedNovember 24, 1948
Application number—
Classification (CPC)—
Length3 pages

Timeline

Timeline From USPTO dates

193119331935193719391941194319451947Application filedJuly 9, 1930Patent grantedNov 24, 1931Term endedNov 24, 1948

Sources & verification

Official USPTO records

Full published documentText and every drawing sheet as a PDF.USPTOFile historyStatus, office actions, notices, fee records and petitions.USPTO Patent CenterPatent Public Search recordSearchable full text and bibliographic data.USPTO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comJustia PatentsFull text, claims and classification.patents.justia.comFreePatentsOnlineFull text and PDF.freepatentsonline.comEspacenetForeign family and legal status.European Patent Office

Everything on this page comes from the USPTO record linked above.