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Means for safeguarding electric igniters of blasting detonators against accidental firing

US 2,408,124 A · Inventors: JAY ROLFES HANS

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Overview

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

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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.

Why it's free to use

  • Granted September 24, 1946. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by September 24, 1963.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledAugust 18, 1942
GrantedSeptember 24, 1946
Term endedSeptember 24, 1963
Application number—
Classification (CPC)F42B3/185
Length6 pages

Timeline

Timeline From USPTO dates

1943194619491952195519581961Application filedAug 18, 1942Patent grantedSep 24, 1946Term endedSep 24, 1963

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