Transportation – Special purpose vehicle – Sleigh or sled
Patent
1997-12-08
1998-11-03
Holtje, Nelson C.
Transportation
Special purpose vehicle
Sleigh or sled
1214
Patent
active
D04004752
REFERENCES:
patent: 278447 (1883-05-01), Mitchell
patent: 3042420 (1962-07-01), Akmentin
patent: 3580592 (1971-05-01), Schroekengust
patent: 4294457 (1981-10-01), Thiboutot
patent: 5509665 (1996-04-01), Hansen
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