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SELECTIVE SPEED SIGNS ACTUATED BY VEHICLE SPEED SENSING
US 3,544,958 A
Filed
: 09/11/1967
Issued
: 12/01/1970
Est. Priority Date
: 09/11/1967
Status: Expired due to Term
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19 Citations
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Current Assignee
Joseph N. Mcintire
,
Leo J. Carey
Original Assignee
Joseph N. Mcintire
,
Leo J. Carey
Inventors
Carey, Leo J.
,
Mcintire, Joseph N.
Application Number
US04/666,627
Time in Patent Office
1,177 Days
Field of Search
US Class Current
340/936
CPC Class Codes
G01P 3/68
using optical means, i.e. u...
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