Railways: surface track – Roadbed
Patent
1981-10-06
1983-01-18
Lesmes, George F.
Railways: surface track
Roadbed
428300, 428212, 428220, 428340, E01B 100
Patent
active
043688446
ABSTRACT:
Railroad support fabric consisting essentially of three lamellae, two being of nonwoven polypropylene fibers, and the third being of nylon fibers, the nylon fiber lamella being sandwiched between the other lamellae, and railroad beds containing said support fabric.
REFERENCES:
patent: 3587964 (1971-06-01), Cork
patent: 3649429 (1971-03-01), Hughes
patent: 4265398 (1981-05-01), Luebke
E. I. Du Pont de Nemours and Company
Johnson Beverly K.
Lesmes George F.
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