Artificial blocks for the protection of hydraulic structures
United States Patent 3096621
Inventors:
Francois, Danel Pierre
Publication Date:
07/09/1963
Assignee:
Grenobloise, Etude Appl
Other Classes:
405/30, D25/117, 52/437
International Classes:
E02B3/14
Foreign References:
| NL68488C | | | | |
| DE831675C | | | | |
| GB697072A | | | | |
| GB763795A | | | | |