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Venetian blind installation and components for obstructing the passage of light between the head channel of the blind and a soffit or the like

US 3,136,357 A · Inventors: LORENTZEN HANS K et al.

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2 drawing sheets

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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 June 9, 1964. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by June 9, 1981.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
Filed—
GrantedJune 9, 1964
Term endedJune 9, 1981
Application number—
Classification (CPC)E06B9/323 +1 more
Length6 pages

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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

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