1000 = 1856 | 100000 = 1901 | 276000 = 1933 | 385000 = 1964 | 531000 = 1995 |
2000 = 1858 | 105000 = 1902 | 278000 = 1934 | 390000 = 1965 | 533500 = 1996 |
3000 = 1860 | 110000 = 1904 | 279000 = 1935 | 395000 = 1966 | 538000 = 1997 |
5000 = 1861 | 115000 = 1905 | 284000 = 1936 | 400000 = 1967 | 541000= 1998 |
7000 = 1863 | 120000 = 1906 | 289000 = 1937 | 405000 = 1968 | 546000 = 1999 |
9000 = 1864 | 125000 = 1907 | 290000 = 1938 | 412000 = 1969 | 550000 = 2000 |
11000 = 1865 | 130000 = 1908 | 294000 = 1939 | 418000 = 1970 | 555000 = 2001 |
13000 = 1866 | 135000 = 1909 | 300000 = 1940 | 423000 = 1971 | 559000 = 2002 |
15000 = 1867 | 140000 = 1910 | 305000 = 1941 | 426000 = 1972 | 563000 = 2003 |
17000 = 1868 | 150000 = 1911 | 310000 = 1942 | 431000 = 1973 | 567000 = 2004 |
19000 = 1869 | 155000 = 1912 | 314000 = 1943 | 436000 = 1974 | 571000 = 2005 |
21000 = 1870 | 160000 = 1913 | 316000 = 1944 | 439000 = 1975 | 574500 = 2006 |
23000 = 1871 | 165000 = 1914 | 317000 = 1945 | 445000 = 1976 | 578000 = 2007 |
25000 = 1872 | 170000 = 1915 | 319000 = 1946 | 450000 = 1977 | 582000 = 2008 |
27000 = 1873 | 175000 = 1916 | 322000 = 1947 | 455500 = 1978 | 584500 = 2009 |
29000 = 1874 | 183000 = 1917 | 324000 = 1948 | 463000 = 1979 | 587000 = 2010 |
31000 = 1875 | 190000 = 1918 | 328000 = 1949 | 468500 = 1980 | 589500 = 2011 |
33000 = 1876 | 195000 = 1919 | 331000 = 1950 | 473500 = 1981 | 592000 = 2012 |
35000 = 1877 | 200000 = 1920 | 334000 = 1951 | 478500 = 1982 | 594500 = 2013 |
40000 = 1878 | 205000 = 1921 | 337000 = 1952 | 483000 = 1983 | 597500 = 2014 |
45000 = 1881 | 210000 = 1922 | 340000 = 1953 | 488000 = 1984 | 600000 = 2015 |
50000 = 1883 | 217000 = 1923 | 343000 = 1954 | 493000 = 1985 | 603000 = 2016 |
55000 = 1886 | 225000 = 1924 | 346500 = 1955 | 498000 = 1986 | 606500 = 2017 |
60000 = 1887 | 232000 = 1925 | 350000 = 1956 | 500000 = 1987 | 608500 = 2018 |
65000 = 1889 | 240000 = 1926 | 355000 = 1957 | 504000 = 1988 | 611500 = 2019 |
70000 = 1891 | 249000 = 1927 | 358000 = 1958 | 508000 = 1989 | 613000 = 2020 |
75000 = 1893 | 260000 = 1928 | 362000 = 1959 | 513000 = 1990 | |
80000 = 1894 | 263000 = 1929 | 366000 = 1960 | 517000 = 1991 | |
85000 = 1896 | 269000 = 1930 | 370000 = 1961 | 521000 = 1992 | |
90000 = 1898 | 271000 = 1931 | 375000 = 1962 | 524000 = 1993 | |
95000 = 1900 | 274000 = 1932 | 380000 = 1963 | 527000 = 1994 |
Year | Patents Accumulated | Patents Missing | Select patents |
---|---|---|---|
2009 | 126 | 13 | |
1999 | 123 | 16 | 2000 Piano Sostenuto Assembly, 2003 Damper Adjustment Device |
1989 | 116 | 23 | 1992 Piano Hammer Forming Method and Reinforcement, 1996 Piano Escapement Action |
1979 | 115 | 24 | 1983 “Permafree II” Bushing Cloth |
1969 | 114 | 25 | 1976 Elastomeric Resin Bushing for Piano Action |
1959 | 110 | 29 | 1963 Hexagrip Wrestplank |
1949 | 107 | 32 | 1959 Action with Means for Adjusting the Touch of Keys |
1939 | 93 | 46 | 1944 Piano Pinblock, 1945 High-Frequency Molding Method |
1929 | 75 | 64 | 1936 Accelerated Action, Diaphragmatic Soundboard |
1919 | 74 | 65 | 1923 Tracker Board for Player Pianos |
1909 | 72 | 67 | 1911 Grand Underlever Top Flange w/Flexible Tab |
1899 | 68 | 71 | 1903 Upright Plate–Cast Capo Bar, Inverted Scale Rib, Transverse Braces |
1889 | 61 | 78 | 1885 Grand Treble Bell, Grand Double Cupola Plate, Upight Closing Rim |
1879 | 40 | 99 | 1872 Grand Duplex Agraffe Scale, 1874 Sostenuto Mechanism |
1869 | 11 | 128 | 1868-69 Upright and Grand Tubular Metallic Action Frames |
1859 | 3 | 136 | 1859 Grand Overstringing |
1853 | 0 | 139 | 1857 Square and Grand Actions |