Transportation – Rail vehicle – Element or attachment
Patent
1986-12-15
1989-07-25
Burke, Wallace R.
Transportation
Rail vehicle
Element or attachment
D12 42
Patent
active
D03024091
REFERENCES:
patent: 1868992 (1932-07-01), Re Qua
patent: 2853775 (1958-09-01), Drake
patent: 2885153 (1959-05-01), Bartley
patent: 3067947 (1962-12-01), Deenik et al.
patent: 3389859 (1968-06-01), Groff
patent: 3666175 (1972-05-01), Gill
Burke Wallace R.
Chin Kay H.
Dutton, Jr. Harold H.
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