Sentence examples for exact date of invention from inspiring English sources

While she did not want to give any specific example, she said disagreements normally related to confirming an exact date of invention or supporting a claim of uninterrupted, century-long production.

Its exact date of conception is somewhat indeterminate.

The exact date of its invention is not known, but it is reasonably certain that it came after the crayon manner.

The invention as well as the exact date of origin of carom billiards is somewhat obscure but is thought to be traceable to 18th-century France.

Exact date of replacement?

His exact date of birth is uncertain.

No exact date of death was given.

But the exact dates -- I cannot pinpoint that exact date of when the President was told.

An exact date of death could not be pinpointed.

Only the exact date of such changes is in question.

The exact date of the Parsi migration is unknown.