loadpatents
Patent applications and USPTO patent grants for Langdon; Roger M.The latest application filed is for "sound detection".
Patent | Date |
---|---|
Sound detection Grant 6,731,570 - Langdon May 4, 2 | 2004-05-04 |
Remote air detection Grant 6,285,288 - Langdon , et al. September 4, 2 | 2001-09-04 |
Laser radar with reference beam storage Grant 5,510,890 - Langdon , et al. April 23, 1 | 1996-04-23 |
Receiver-transmitter for a target identification system Grant 5,353,109 - Langdon , et al. October 4, 1 | 1994-10-04 |
Helmet mounted display Grant 5,164,848 - Firth , et al. November 17, 1 | 1992-11-17 |
Orientation monitoring apparatus Grant 5,059,781 - Langdon October 22, 1 | 1991-10-22 |
Photothermal oscillator force sensor Grant 4,772,786 - Langdon September 20, 1 | 1988-09-20 |
Vane for use in monitoring flow of a fluid Grant 4,596,153 - Macdonald , et al. June 24, 1 | 1986-06-24 |
Force sensors Grant 4,594,898 - Kirman , et al. June 17, 1 | 1986-06-17 |
Mass flow measurement device Grant 4,420,983 - Langdon December 20, 1 | 1983-12-20 |
Measurement of the density of liquids Grant 4,240,285 - Langdon December 23, 1 | 1980-12-23 |
Liquid level sensing devices Grant 4,213,337 - Langdon July 22, 1 | 1980-07-22 |
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