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Subterranean telescoping signs
US 2,819,547 A
Filed
: 01/18/1954
Issued
: 01/14/1958
Est. Priority Date
: 01/18/1954
Status: Expired due to Term
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Current Assignee
Jacob D. Clements Jr
Original Assignee
Jacob D. Clements Jr
Inventors
Clements, Jacob D. Jr.
Application Number
US03/404,507
Time in Patent Office
1,457 Days
Field of Search
US Class Current
40/612
CPC Class Codes
E01F 9/646
extensible, collapsible or ...
G09F 7/00
Signs, name or number plate...
Y10T 403/32426
Plural distinct positions
Y10T 403/32524
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