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Magnetic controlling device

US 1,388,658 A · Inventors: CESAR MARSHALL

USPTO PDF

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 August 23, 1921. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by August 23, 1938.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledOctober 16, 1917
GrantedAugust 23, 1921
Term endedAugust 23, 1938
Application number—
Classification (CPC)F42B22/04
Length5 pages

Timeline

Timeline From USPTO dates

1918192119241927193019331936Application filedOct 16, 1917Patent grantedAug 23, 1921Term endedAug 23, 1938

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.