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Gas operated firearm with gas piston surrounding a tubular magazine

US 2,909,101 A · Inventors: HILLBERG ROBERT L

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Overview

The published document from the USPTO: abstract, claims, description and drawings. Open it full size

No Claude kit for weapons

Claude doesn't help design weapons, ammunition or explosives, so this page has no Reinvent kit. To develop this one, work with a federally licensed manufacturer (many of these items are regulated) and a registered patent attorney or agent, listed on the USPTO roster.

Read the whole patent

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.

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Why it's free to use

  • Granted October 20, 1959. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by October 20, 1976.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledMarch 22, 1954
GrantedOctober 20, 1959
Term endedOctober 20, 1976
Application number—
Classification (CPC)F41A3/32 +2 more
Length11 pages

Timeline

Timeline From USPTO dates

19551958196119641967197019731976Application filedMarch 22, 1954Patent grantedOct 20, 1959Term endedOct 20, 1976

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.