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Electric blasting cap

US 2,477,458 A · Inventors: JOHNSON CHARLES R

USPTO PDF

Overview

1 drawing sheet

Every sheet is in the USPTO PDF.

Open the USPTO PDF

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 July 26, 1949. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by July 26, 1966.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledDecember 19, 1944
GrantedJuly 26, 1949
Term endedJuly 26, 1966
Application number—
Classification (CPC)F42B3/103
Length4 pages

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.