- precautional patent
- "金山词霸2003法学大词典":
预告专利
English-Chinese law dictionary (法律英汉双解大词典). 2013.
precautional patent
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Julius Jeffreys — (1800 1877) was a British surgeon, writer, inventor of the respirator, and was a pioneer in the development of early air conditioning systems.Early lifeJulius Jeffreys was born on September 14th, 1800 at Hall Place, Bexley, Kent, England, where… … Wikipedia
