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 LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '84') AND (category.subclass = '191') ORDER BY date ASC, patent, type

Total of 16 patents found where: Class is '84'; Subclass is '191';

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
 1859
U 24,294 June 7, 1859 Leg for Pianos
Glass insert in a piano leg with hole for mounting a caster wheel		 GELIN, Felix
GELIN, Charles
 Piano  
 1874
U 150,112 April 21, 1874 Improvement in Piano Forte Insulators
Glass cup to insulate a piano leg from sending musical vibrations to the floor		 VIGNERON, Charles
 Piano  
U 153,101 July 14, 1874 Improvement in Piano Sound Insulating Attachments
Glass insert in a piano leg with hole for mounting a caster wheel		 MILLER, William R.
 Piano  
U 155,099 September 15, 1874 Improvement in Insulators for Musical Instruments
Insulator mounted between the top of the piano leg and the piano		 MILLER, William R.
 Piano  
 1875
U 159,342 February 2, 1875 Improvement in Piano Insulators
Insulator mounted between the top of the piano leg and the piano		 MILLER, William R.
 Piano  
 1880
U 228,962 June 15, 1880 Musical Instrument Insulator
Glass insulator for piano legs		 WEIR, Charles S.
 Piano  
 1882
U 266,552 October 24, 1882 Insulator for Musical Instruments
Hollow glass insulator for piano legs		 SYNAR, Joseph
 Piano 2/3 to Henry B. Synar and John T. Synar
 1899
U 632,851 September 12, 1899 Bedstead Insulator
Glass insulator for bed legs		 SELLERS, William
 Piano  
U 639,016 December 12, 1899 Acoustic Supporting Base for Pianos
Hollow glass insulator for piano legs		 BRONSON, Frank A.
 Piano  
 1900
U 641,493 January 16, 1900 Support for Musical Instruments
Hollow glass insulator for piano legs with adjustable height		 BOORMAN, David
 Piano  
 1902
U 700,977 May 27, 1902 Support for Pianos
Glass caster cup for pianos		 OLSEN, Andreas
 Piano  
 1903
U 743,672 November 10, 1903 Elastic Piano Support
Piano leg support composed of a metal spring		 BAEUMLE, John
 Piano  
 1920
U 1,345,987 July 6, 1920 Cushion Support
Square of layered rubber with depression in the center to hold caster wheel from movement		 BOCKING, Frederick William
 Piano  
 1921
U 1,374,029 April 5, 1921 Tone Foot for Phonographs
A rubber base with glass insert to support phonograph legs		 PRICKETT, William H.
 Piano  
 1928
U 1,670,853 May 22, 1928 Piano Insulator
Glass base with metal and rubber cup to support the piano leg		 GEBHARD, Carl
 Piano  
 1932
U 1,848,501 March 8, 1932 Caster Base
Wood, cork, and felt support for piano legs		 STEVENS, Charles Whitney
 Piano  

Total of 0.01 seconds