Title:
Hatchway closure
United States Patent 2663268
US Patent References:
/0870540.html
- - 0870540

Retaining means
- - 2128305

Closure for tank apertures
- - 2134314


Inventors:
Ahnell, Karl J.
Publication Date:
12/22/1953
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Assignee:
GEN ELECTRIC
Primary Class:
105/456
Other Classes:
292/256.500, 105/377.070, 52/19, 220/378, 114/203, 114/178, 49/493.100, 292/341.150, 292/251
International Classes:
B61C17/12; B61C17/00