1817
The patent expiration date for a specific invention is typically calculated 20 years from the filing date of the patent application.
The date the inventor received exclusive right to his invention..
December of 1981
the bike was invented in the 1860s
I believe 1960
The expiration date of a bicycle helmet is typically 5-10 years from the date of manufacture. It is important to replace a helmet after this time to ensure it provides proper protection in case of a fall or accident.
what did john logie baind invent
The book Edison the Firefly and the Invention of the Light Bulb is copyright 2008.
I'm looking for the date of a J.C. Higgins bicycle with the serial number 705495
2011 was the date of invention
June 1817.
It was invented in the 1500's.