Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Timed photocell switch circuit

Timed photocell switch circuit

US Patent 5789868 · Granted Aug 4, 1998

Estimated economic value: $851,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Auxiliary lighting control circuit and method for a HID lamp lighting system2000
Meter transmission unit for use with a pit set utility meter2000
Coin acceptance mechanism and method of determining an acceptable coin1999
Multi-speed motor1998
Utility meter reading system1998
Method and apparatus for electronically measuring dispenser usage1997
Apparatus for communicating utility usage-related information from a utility usa1997
Method and apparatus for actuating a direct source exhaust gas capture system1996
Power supply for a gas discharge lamp1996
Sheet material coil counter1995
Pump cassette and method of pumping1993
Variable speed hydromassage pump control1992