Title:
Concentric chambered prestressed unit
United States Patent 3260020
US Patent References:
Composite pipe and method of making same
- - 1965748

Jack apparatus
- - 2226201

Pressure vessel
- - 2507778

Concrete pipe mold
- - 2579801

Lined reactor
- - 2634194


Inventors:
Pierre, Patin
Publication Date:
07/12/1966
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Assignee:
Cie, Ingenieurs Technicien D. ET.
Primary Class:
52/2.150
Other Classes:
138/176, 52/249, 264/228, 52/223.200, 220/645, 165/47, 52/80.100
International Classes:
B28B21/60; E04G21/12; E04H7/20; B28B21/00; E04H7/00
US Patent References:
3002534Reinforced thermoplastics
3056183Process for the production of lined prestressed concrete hollow bodies
3107158Method for the manufacture of pipes of concrete having prestressed longitudinal and annular reinforcements
Foreign References:
FR1208027A