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Process of making propellent powder

US 1,379,073 A · Inventors: WOODBRIDGE JR RICHARD GEORGE

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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.

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Why it's free to use

  • Granted May 24, 1921. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by May 24, 1938.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledAugust 8, 1919
GrantedMay 24, 1921
Term endedMay 24, 1938
Application number—
Classification (CPC)C06B21/0083
Length3 pages

Timeline

Timeline From USPTO dates

1920192219241926192819301932193419361938Application filedAug 8, 1919Patent grantedMay 24, 1921Term endedMay 24, 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

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Everything on this page comes from the USPTO record linked above.