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CARRYING-TYPE SCRAPER WITH HORIZONTALLY MOVABLE APRON
US 3,474,550 A
Filed
: 12/27/1966
Issued
: 10/28/1969
Est. Priority Date
: 12/27/1966
Status: Expired due to Term
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Current Assignee
Frank William Rudolph
Original Assignee
Frank William Rudolph
Inventors
FRANK WILLIAM RUDOLPH
Application Number
US04/604,930
Time in Patent Office
1,036 Days
Field of Search
US Class Current
37/435
CPC Class Codes
E02F 3/64
Buckets cars, i.e. having s...
E02F 3/6472
with elements of the scrape...
E02F 3/657
Means to prevent the spilli...
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