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Process of making roofing felt or like material

US 1,558,495 A · Inventors: OVERBURY FREDERICK C

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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.

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Why it's free to use

  • Granted October 27, 1925. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by October 27, 1942.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJuly 29, 1915
GrantedOctober 27, 1925
Term endedOctober 27, 1942
Application number—
Classification (CPC)E04B1/66 +1 more
Length3 pages

Timeline

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191619191922192519281931193419371940Application filedJuly 29, 1915Patent grantedOct 27, 1925Term endedOct 27, 1942

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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

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