专利检索_ .拖拉机与机械之间的联接装置的专利检索_ .拖拉机与机械之间的联接装置的专利检索查询

序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
21	Tractor safety hitches	US52806555	1955-08-12	US2863372A	1958-12-09	BERGERSON RAYMOND H

22	Automatic clutch throw-out device	US52744555	1955-08-10	US2858896A	1958-11-04	HARRIS GEORGE W; BOLEK FRANK S

23	Hinge for use with safety hitch	US47470754	1954-12-13	US2809857A	1957-10-15	OLSEN JOHN B

24	Tractor-mounted plow	US20002850	1950-12-09	US2747489A	1956-05-29	SILVER WALTER H; LOHRMAN WILLIAM V

25	Connection facilitating vehicle draft means	US38106953	1953-09-18	US2717163A	1955-09-06	MARTIN PAUL H

26	Automatically oscillated mounting for earthworking elements	US21883651	1951-04-02	US2701994A	1955-02-15	WENDELL JENNINGS CHARLES

27	Overload cable release	US20397751	1951-01-02	US2643134A	1953-06-23	HANSEN HARDING H

28	Overload release for rockable arms	US56437744	1944-11-20	US2409511A	1946-10-15	MOTT CARL W

29	Power lift	US48234943	1943-04-08	US2368266A	1945-01-30	SILVER WALTER H

30	Hitch device	US40529241	1941-08-04	US2334889A	1943-11-23	STRANDLUND CARL G

31	Tractor attached implement	US36775840	1940-11-29	US2319492A	1943-05-18	DEWEY FREDERICK L

32	Draft and power control appliance	US36850940	1940-12-04	US2311826A	1943-02-23	GRASSWICK CARL A

33	Tractor hitch device	US6577036	1936-02-26	US2102722A	1937-12-21	KORTERING JUSTIN H

34	Draft for tractor-plows	US43121120	1920-12-16	US1386336A	1921-08-02	HOFTRUP LOUIS M

35	Automatic clutch control	US36506120	1920-03-11	US1371918A	1921-03-15	ALEXANDER MCDANNOLD

36	Cultivator	US1326065D		US1326065A	1919-12-23

37	Draft	US1322661D		US1322661A	1919-11-25

38	Plow-tractor	US1307383D		US1307383A	1919-06-24

39	Ijraft	US1305651D		US1305651A	1919-06-03

40	Wheeled plow.	US1909491833	1909-04-23	US1113501A	1914-10-13	SOBEY WILLIAM

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