Collapsible boat
United States Patent 3070816
US Patent References:
Collapsible boat
- - 1857236
Collapsible boat
- - 1916486
Collapsible boat
- - 2220608
Manufacture of plastic articles having spaced shells with reinforced foam filling
- - 3013922
Collapsible boat
- - 1857236
Collapsible boat
- - 1916486
Collapsible boat
- - 2220608
Manufacture of plastic articles having spaced shells with reinforced foam filling
- - 3013922
Inventors:
Lewis, Charles T.
Publication Date:
01/01/1963
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Assignee:
Lewis, Charles T.
Primary Class:
International Classes:
B63B7/06; B63B7/00