| US Patent# |
Issued Date |
Description |
| 323,144 |
1885 Jul 28 |
Valve |
| 339,771 |
1886 Apr 13 |
Metallic packing for stuffing boxes |
| 345,056 |
1886 Jul 6 |
Valve |
| 419,440 |
1890 Jan 14 |
Pressure regulating valve and governor |
| 572,296 |
1896 Dec 1 |
Back pressure valve |
| 572,297 |
1896 Dec 1 |
Safety valve |
| 693,133 |
1902 Feb 11 |
Automatic duplex check and stop valve |
| 763,889 |
1904 Jun 28 |
Balanced hydraulic valve |
| 789,855 |
1905 May 16 |
Relief and back-pressure valve |
| 817,773 |
1906 Apr 17 |
Balanced hydraulic valve |
| 831,159 |
1906 Sep 18 |
Cock |
| 857,802 |
1907 Jun 25 |
Engine |
| 907,597 |
1908 Dec 22 |
Packing |
| 933,731 |
1909 Sep 7 |
Safety system for ammonia refrigeration apparatus |
| 945,458 |
1910 Jan 4 |
Metallic packing |
| 974,266 |
1910 Nov 1 |
Engine stop |
| 1,086,047 |
1914 Feb 3 |
Engine |
| 1,147,861 |
1915 Jul 27 |
Packaging liquids |
| 1,152,176 |
1915 Aug 31 |
Butterfly valve |
| 1,186,780 |
1916 Jun 13 |
Self-controlling reducing valve |
| 1,237,335 |
1917 Aug 21 |
Governor-actuated fluid controller |
| 1,283,179 |
1918 Oct 29 |
Hydraulic mechanism and valve for same |
| 1,294,461 |
1919 Feb 18 |
Two fluid control valve |
| 1,344,300 |
1920 Jun 22 |
Back pressure and relief valve |
| 1,368,147 |
1921 Feb 8 |
Hydraulic testing system |
| 1,533,800 |
1925 Apr 14 |
Apparatus for controlling steam pressure in boilers |
| 1,555,855 |
1925 Oct 6 |
Oil burner |
| 1,600,468 |
1926 Sep 1 |
Automatic sprinkler alarm valve |
| 1,617,711 |
1927 Feb 15 |
Combined relief and vacuum valve |
| 1,741,364 |
1929 Dec 31 |
Oil burner |
| 1,861,916 |
1932 Jun 7 |
Balanced quick operating valve |
| 1,899,328 |
1933 Feb 28 |
Balanced throttle and trip valve |
| 1,923,621 |
1933 Aug 22 |
Cushioned relief and check valve |
| 1,936,715 |
1933 Nov 28 |
High and low pressure operating balanced valve |
| 1,950,983 |
1934 Mar 13 |
Strainer |
| 1,960,874 |
1934 May 29 |
Reciprocating motion engine stop |
| 1,970,888 |
1934 Aug 21 |
Balanced plug type throttle valve |
| 2,075,986 |
1937 Apr 6 |
Gaseous fuel consuming heating apparatus |
