Table 4. Revised codes for "Hydraulic and Earth Engineering" from 



the Manual of Classification of Patents .- -Continued 



CLASS 105 HYDRAULIC AND EARTH ENGINEERING 



JANUARY 1979 



FOUNDATION 



.Columnar structure (e.g., pier, pile) 



251 ..With joint or connection between 



sections of similar material 



252 ...Between concrete sections 



253 ..With driving or cutting tip 

 25') ...Longitudinally ribbed 



255 . .With end cap 



256 ..Concrete 



257 ...With form or casing 



258 EARTH TREATMENT OR CONTROL 



259 .Rock or earth bolt or anchor 



260 ..With grouting feature 



261 ...Breaking canister or packet 



262 ..With retaining wall 



263 .Chemical 

 261 ..Organic 



265 ...Bituminous 



266 . .Cementitlous (e.g., grouting) 



267 ...Filling substerranean cavity (e.g., 



underground wall) 



268 ...Lining 



269 ...Injector 



270 .Irapermeablllzatlon 



271 .Compaction 



272 .Shoring, bracing, or cave-In prevention 



273 ..Cribbing 

 271 . .Sheet piles 



275 ...Concrete 



276 ...Metal 



277 C or I sections 



278 Head and claw interlock 



279 With separate fastening, reinforcing 



or sealing means 



280 Cellular 



281 Bulb and socket interlock 



282 . .Trench shoring 



283 . . .Shield type 

 281 . .Retaining wall 



285 .. .Pile and panel 



286 ...Concrete 



287 Cast In situ 



288 . .Roof support 



289 . ..I.-.flatable 



290 ...Jack 



291 Mobile 



292 Position restoring 



293 With ca.nopy extension 



291 Telescoping 



295 Cantilevered 



296 With rubble shield 



297 With contour following feature 



298 Under load advanceable 



299 Self-advanceable 



300 Paired 



301 Nested 



302 Control system 



303 MISCELLANEOUS 



^J1 



" I 

 ~ I 



47 



