ANCHOR BOLTS AND METHOD FOR FIXING SAME IN DRILL HOLES ESPECIALLY IN FRIABLE ROCK
United States Patent 3430449
US Patent References:
/0836673.html
- - 0836673

Structural element
- - 1971051

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- - 2667037

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- - 2829502

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- - 2856680


Inventors:
Novotny, Rudolf
Schuermann, Fritz
Publication Date:
03/04/1969
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Assignee:
Rudolf, Novotny
Schuermann, Fritz
Primary Class:
405/259.600
Other Classes:
411/15
International Classes:
E21D20/02; E21D20/00; E21D21/00; E21D20/00; F16B13/06
US Patent References:
3108443Method of fixing anchor bolts in the drill holes
3302410Rock bolting package usage




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