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United States Utility Patents
5,347,980 - 5,347,989
Previous 10 Next 10
| Number | | Title |
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5,347,980 |
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Dual drainage slope recuperative heat exchanger assembly for fuel-fired condensing furnaces |
|
5,347,981 |
|
Pilot pressure switch and method for controlling the operation of a furnace |
|
5,347,982 |
|
Flame monitor safeguard system |
|
5,347,983 |
|
Draft hood attachment device |
|
5,347,984 |
|
Solar pool heater |
|
5,347,985 |
|
Constant temperature solar water heater switch |
|
5,347,986 |
|
Solar powered high pressure steam generator |
|
5,347,987 |
|
Self-centering endoscope system |
|
5,347,988 |
|
Endoscope coupler with liquid interface |
|
5,347,989 |
|
Control mechanism for steerable elongated probe having a sealed joystick |
For U.S. patent law, rules, and procedures see MPEP.
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