US Patent Class 37
EXCAVATING-- Main Headings




Electronic
File
Wrappers


Electronic
Patent
Documents


Paper
Patent
Documents

Current as of: June, 1999
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Products
and
Services


CLASS NOTES
300  DF  GRAVE DIGGER
301  DF  LAND CLEARER {2}
3  DF  PEAT EXCAVATORS
196  DF  SNOW OR ICE REMOVING OR GROOMING BY PORTABLE DEVICE {16}
304  DF  SELF-LOADING VEHICLE {2}
307  DF  BENEATH A BODY OF WATER (E.G., DREDGER) {11}
347  DF  DITCHER {8}
104  DF  RAILWAY GRADERS {1}
381  DF  ROAD GRADER-TYPE {7}
394  DF  CABLE-OPERATED (E.G., DRAGLINE) {3}
403  DF  COMBINED OR CONVERTIBLE {5}
411  DF  SCOOP OR EXCAVATING AND TRANSPORTING CONTAINER {7}
446  DF  DIGGING EDGE {7}
142.5  DF  DITCH FILLER
182  DF  ORANGE-PEEL BUCKETS
461  DF  CLAMSHELL BUCKET {4}
189  DF  ROTARY DIGGER {1}
462  DF  ENDLESS DIGGER {2}
195  DF  PROCESSES
466  DF  MISCELLANEOUS
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CROSS-REFERENCE ART COLLECTIONS
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901  DF  Bucket cleaners
902  DF  Hydraulic motors
903  DF  Scoop or scraper attachments
904  DF  Vibration means for excavating tool
905  DF  Nondredge excavating by fluid contact or explosion
906  DF  Visual aids and indicators for excavating tool
907  DF  Automatic leveling excavators
908  DF  Canal cleaners