专利检索_ .手动钻进工具专利检索_ .手动钻进工具专利检索查询

序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
121	Excavating tool	US33903540	1940-06-05	US2230498A	1941-02-04	EDWARD LOOS; RICHARD WITTHUHN

122	Excavating and prospecting tool	US16304137	1937-09-09	US2121858A	1938-06-28	CHEW FRED C

123	Star drill	US5353635	1935-12-09	US2066427A	1937-01-05	SMITH LLOYD A

124	Auger	US12808326	1926-08-09	US1691540A	1928-11-13	THEODORE BIRKENMAIER

125	Posthole auger	US6990425	1925-11-18	US1642647A	1927-09-13	COGER ALBERT C

126	Reamer	US6319725	1925-10-17	US1600476A	1926-09-21	KETCHEY JOHN F

127	Earth auger	US48494421	1921-07-15	US1523143A	1925-01-13	OTTO SCHWEISGUT

128	Earth auger	US62762023	1923-03-26	US1521878A	1925-01-06	JOHN FUITE

129	Coal drill	US39763320	1920-07-20	US1515157A	1924-11-11	STANISLAW MIKULSKI

130	Earth auger	US44272321	1921-02-05	US1466897A	1923-09-04	PAUL GAMPHER

131	Drilling tool	US49625221	1921-08-29	US1456153A	1923-05-22	SEEGER HERMAN L

132	Device for digging postholes	US52351621	1921-12-19	US1442883A	1923-01-23	OLIVIER GILBERT

133	Coal auger	US41291720	1920-09-27	US1437033A	1922-11-28	WILLIAMS GEORGE E; STULTZ JUBAL E; HILL RAYMOND E

134	Posthole auger	US48787821	1921-07-27	US1411395A	1922-04-04	NELSON WILBER; WILLIAM FRITZE

135	Auger.	US7734916	1916-02-09	US1199432A	1916-09-26	SCHLADOR JOHN CALVIN

136	Engine for coal-boring machines.	US1914875587	1914-12-05	US1181126A	1916-05-02	EVANS JAMES W

137	Post-hole digger.	US2719415	1915-05-10	US1160483A	1915-11-16	WOLF HENRY A

138	Earth-auger.	US1912713159	1912-08-03	US1114206A	1914-10-20	WATKINS BENJAMIN G; WATKINS TAYLOR; WATKINS WALTER P

139	Post-hole auger.	US1912698020	1912-05-17	US1110517A	1914-09-15	WATKINS BENJAMIN G; WATKINS WALTER P; WATKINS TAYLOR

140	Earth-auger.	US1914810394	1914-01-05	US1106425A	1914-08-11	SUHR CHARLES A

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