Granted Patent
Utility
US 4,175,436 · App. 05/937,199
Wet/dry bulb hygrometer with automatic wick feed
Inventors:
William B. Crawford, Vernon T. Daniel, Kenneth Y. Wang
Patented Case
View Patent ↗
Granted: Nov 27, 1979
Filed: Aug 28, 1978
Inventors
William B. Crawford
Vernon T. Daniel
Kenneth Y. Wang
Assignee (at issue)
Burlington Industries LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.