Swimming pool steps
United States Patent 3236012
US Patent References:
/0700522.html
- - 0700522

/0815840.html
- - 0815840

/1019870.html
- - 1019870

Drain pit and grease rack
- - 1654073

Unitary stairway for basement entrances
- - 2695689


Inventors:
Laven, Merrill L.
Publication Date:
02/22/1966
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Assignee:
Laven, Merrill L.
Primary Class:
52/184
Other Classes:
D25/2, 4/506
International Classes:
E04H4/14; E04H4/00
US Patent References:
2936504Process for making a concrete shelter
2974746Grab rail construction
3015191Swimming pool and method for erecting same
Foreign References:
FR832632A
GB531040A