Title:
Process and arrangement for production and placing of filling material in hollow building elements
United States Patent 3347136
Inventors:
Gregers, Kure
Publication Date:
10/17/1967
Export Citation:
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Assignee:
Gregers, Kure
Primary Class:
493/360
Other Classes:
53/520, 156/197, 425/383, 493/362, 493/393, 493/966, 493/967
International Classes:
B27D1/06; B31D3/00; B27D1/00; B31D3/00
View Patent Images:
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US Patent References:
2697461Method of making spirals for hollow panel structures
2633439Hollow panel door structure
2606133Machine for forming structural material
2475789Method and machine for making corrugated structures
Foreign References:
BE529027A
GB145854A
GB843631A