Combined helicopter and tank

Details Combined helicopter and tank Combined helicopter and tank

1985-01-11

1987-10-06

Rademaker, Charles A.

Transportation

Special purpose vehicle

Combined, e.g., land-sea-air-type vehicle

D21 90, D21131

Patent

active

D02921936

REFERENCES:
patent: D135849 (1943-06-01), Gibson
patent: D138329 (1944-07-01), Wasson
patent: D169229 (1953-03-01), Tober
patent: D284594 (1986-07-01), Fisher
patent: D287378 (1986-12-01), Ohno
patent: 1788440 (1931-01-01), Prell
patent: 2019482 (1935-11-01), Barnes
patent: 2424769 (1947-07-01), Page
patent: 2560747 (1951-07-01), Sievers
patent: 3761040 (1973-09-01), Cummins

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