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Expired, full termArchiveSolo inventor

Envelop-opener.

US 1,137,726 A

USPTO PDF

Overview

4 drawing sheets

Every sheet is in the USPTO PDF.

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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.

Why it's free to use

  • Granted April 27, 1915. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by April 27, 1932.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
Filed—
GrantedApril 27, 1915
Term endedApril 27, 1932
Application number—
Classification (CPC)B26D1/29 +2 more
Length13 pages

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