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Combustion flask

US 1,531,475 A · Inventors: BRANDT EDMUND S R

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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 March 31, 1925. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by March 31, 1942.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledMarch 26, 1921
GrantedMarch 31, 1925
Term endedMarch 31, 1942
Application number—
Classification (CPC)F42B19/20
Length3 pages

Timeline

Timeline From USPTO dates

1922192519281931193419371940Application filedMarch 26, 1921Patent grantedMarch 31, 1925Term endedMarch 31, 1942

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.