Patent Yard Sign in
Expired, full termArchiveSolo inventor

Arrangement for varying the band width in high frequency circuits

US 2,299,337 A · Inventors: WILHELM MENNERICH et al.

USPTO PDF

Overview

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

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, and the Claude kit works from them.

Google PatentsUSPTO PDF

Why it's free to use

  • Granted October 20, 1942. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by October 20, 1959.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledMay 16, 1939
GrantedOctober 20, 1942
Term endedOctober 20, 1959
Application number—
Classification (CPC)H03H7/0184
Length3 pages

Timeline

Timeline From USPTO dates

1940194219441946194819501952195419561958Application filedMay 16, 1939Patent grantedOct 20, 1942Term endedOct 20, 1959

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.