Expired, full termArchiveSolo inventor
Electric sign display and method of making same
US 2,106,331 A · Inventors: LAURENCE SMITH ARTHUR
Overview
The published document from the USPTO: abstract, claims, description and drawings. Open it full size
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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 January 25, 1938. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by January 25, 1955.
- We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledNovember 6, 1935
GrantedJanuary 25, 1938
Term endedJanuary 25, 1955
Application number—
Classification (CPC)G09F13/26
Length7 pages
Timeline
Timeline From USPTO dates
Sources & verification
Official USPTO records
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Everything on this page comes from the USPTO record linked above.