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APPARATUS FOR TESTING GAS MAINS
US 3,439,527 A
Filed
: 05/12/1967
Issued
: 04/22/1969
Est. Priority Date
: 05/12/1967
Status: Expired due to Term
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Current Assignee
Carl H. Rohrer
Original Assignee
Carl H. Rohrer
Inventors
Rohrer, Carl H.
Application Number
US04/637,995
Time in Patent Office
711 Days
Field of Search
US Class Current
73/40.50A
CPC Class Codes
G01M 3/005
using pigs or moles G01M3/2...
G01M 3/223
for pipe joints or seals
G01M 3/246
using pigs or probes travel...
G01M 3/2853
for pipe joints or seals G0...
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