Search patents:
Portable gin pole
Portable gin pole
Filed: January 1st, 1970 [Granted]
Patent Number: US2128712
j A. J. NEFF PORTABLE GIN POLE Aug. 30, 1938. Filed Sept. 22, 1936 6 Sheets- Sheet 1 Aug. 30, 1938. A, J NEFF 2,128,712. ( PORTABLE GIN POLE Filed ...
Folding portable gin pole
Folding portable gin pole
Filed: January 1st, 1970 [Granted]
Patent Number: US2557192
June l9, 1951 G, D, ESTER 2,557,192. FOLDING PORTABLE GIN POLE Filed Feb. '7, 1949 /4 Y INVENTOR. 49 GROVER 0. LE/STER 4o I BY Patented June F3, ...
Portable gin pole structure
Portable gin pole structure
Filed: January 1st, 1970 [Granted]
Patent Number: US1828973
1931- G. D. LEISTER PORTABLE GIN POLE STRUCTURE Filed May 1. 1929 IVIENTOR BY W W A TTORNE Y Patent d Oct. 27, 1931 ATENT OFFICE onovnnn .
Portable oil well mast with folding gin pole
Portable oil well mast with folding gin pole
Filed: January 1st, 1970 [Granted]
Patent Number: US2787344
April 2, 1957 H. J. WOOLSLAYER ETAL 2,787,344. PORTABLE OIL WELL MAST WITH FOLDING GIN POLE Filed Feb. 10, 1954 3 Sheets-Sheet 1 5 R k m K N ...
Oil-well utility gin pole
Oil-well utility gin pole
Filed: January 1st, 1970 [Granted]
Patent Number: US1632935
June 21, 1927 ,935 C. E. T U RNER ET AL OIL WELL UTILITY GIN POLE Filed ... The objects of our invention are as follows: First, to provide a'portable. gin pole.
Portable oil well derrick
Portable oil well derrick
Filed: January 1st, 1970 [Granted]
Patent Number: US2656023
3 is an enlarged fragmentary rear view of the upper portion of the gin pole and the ... A splice connection for a portable oil well derrick that has a gin pole and a ...
Portable oil well derrick
Portable oil well derrick
Filed: January 1st, 1970 [Granted]
Patent Number: US2863530
(Cl. 189-l1) This invention relates to portable oil well derricks, and more particularly to those that are swung up to upright position with the help of a gin pole.
Oil well mast gin pole
Oil well mast gin pole
Filed: January 1st, 1970 [Granted]
Patent Number: US2780325
18s-16) This invention relates Ito the gin poles that are used in raising and supporting portable oil well masts, and more particularly to the way in which the gin ...