| 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 = '190') ORDER BY date ASC, patent, type |
Total of 6 patents found where: Class is '84'; Subclass is '190';
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 |
| 1871 | ||||||
| U | 121,686 | December 5, 1871 | Improvement in Sounding Boards for Pianos Support for piano comprised of three layers of wooden boards |
TAYLOR, Edward L. |
Piano | |
| 1877 | ||||||
| U | 189,441 | April 10, 1877 | Improvement in Hollow Supports for Pianos Hollow block to support piano legs (see reissue 7,750) |
FAIRMAN, James |
Piano | |
| R | 7,750 | June 19, 1877 | Improvement in Piano Attachments Hollow block to support piano legs (see 189,441) |
FAIRMAN, James |
Piano | |
| 1917 | ||||||
| U | 1,221,225 | April 3, 1917 | Floor Protecting Attachment for Furniture Cup of wood or rubber to hold caster wheel and sheet metal insert to secure caster from movement |
SCHAUERMANN, Edward |
Piano | The Hold Fast Caster Cup Co. |
| 1925 | ||||||
| U | 1,562,817 | November 24, 1925 | Piano Glide Glass shell with bottom made of polished hardwood to aid in moving piano and act as an insulator |
WISMER, George C. |
Piano | |
| 1955 | ||||||
| U | 2,699,628 | January 18, 1955 | Caster Cup Molded top supporting plate supported by resilent material |
AUER, Betty |
Piano | |
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