Search the Insulator Patent Reference Library:

Build your search criteria. The patent must match all the values specified.
Select patent types: Utility   Design   Reissue
Patent number:
Date:
Year between: and
Patentee starting with:
City:
State:
Assigned To starting with:
Description containing:
Category:
Class:    Subclass:
Click Search when complete:
SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (category = 'Oil') ORDER BY description ASC, date, patent, type

Total of 10 patents found where: Category is 'Oil';

View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.

T / S Patent Date Description Patentee Category Assigned To
 1867
U 71,418 November 26, 1867 Improvement in Telegraph Insulators
Cup under insulator (similar to oil insulator) to maintain dry surfaces (see reissue 3,499 on 6-8-1869) Patent was used by Central Electric Co.
SIMONDS, W. Edgar
Oil  
 1894
U 519,446 May 8, 1894 Trolley Wire Hanger
Glass oil insulator used in trolley wire hanger
CROUNSE, Albert B.
RUTLEDGE, Charles A.
Oil  
 1878
U Specimen known 201,615 March 26, 1878 Improvement in Insulators for Telegraph Wires
Oil cup insulator
JOHNSON, Walter C.
PHILLIPS, Samuel E.
Oil  
 1893
U 506,002 October 3, 1893 Insulating Support for Metallic Circuits
Oil cup insulator to support short crossarm for two insulators
COUSENS, Alfred C.
Oil Charles Stone
 1894
U Specimen known 524,659 August 14, 1894 Insulator
Oil cup with means to support the cup from the insulator (see 517,634)
WINSLOW, George H.
Oil  
 1891
U 461,631 October 20, 1891 Insulating Support for Electric Conductors
Oil insulator
HEWETT, Robert J.
Oil  
 1904
U 771,297 October 4, 1904 Insulator
Oil reservoir for transformer insulator
CHESNEY, Cummings C.
Oil Stanley Electric Mfg. Co.
 1934
U 1,944,383 January 23, 1934 Oil Bath Insulator
Oil type insulator using oil cup attached to edge of insulator and protective cover attached to prevent contamination from fog or rain
WEILL, Robert
Oil  
 1906
U 839,666 December 25, 1906 Built up Insulator
Oil used in hidden reservoir of multipart insulator made of Electrose
STEINBERGER, Louis
Oil  
 1868
U 76,960 April 21, 1868 Improvement in Insulators for Telegraphs
Oil, wax or rubber saturated insulator to improve same (Brown p. 57)
VARLEY, Cromwell F.
Oil  

Total of 0.00 seconds