Ships – Building – Canal and ferry boats
Patent
1976-06-10
1977-06-07
Shapiro, Jacob
Ships
Building
Canal and ferry boats
114 45, 214 1A, B63C 102
Patent
active
040274926
ABSTRACT:
A transportable boat lift including a framework having a base portion and a boat support portion mounted on the base portion for vertically directed movement between extended or boat supporting and non-supporting or retracted positions, and at least one flotation device coupled to the framework for effecting submersion/emersion thereof incident to such movements of the boat support portion relative to the base portion.
REFERENCES:
patent: 2612025 (1952-09-01), Hunsucker
patent: 3077742 (1963-02-01), Brown
patent: 3216704 (1965-11-01), Smith
patent: 3265024 (1966-08-01), Kramlich
patent: 3753355 (1973-08-01), Knoch
Metallic Ladder Manufacturing Corporation
Shapiro Jacob
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