644,077 (US) issued February 27, 1900
In a year
Aspirin is also abbreviated ASA.The patent on ASA finished many years ago and listing all the possible brand names would be the work of a team over weeks.
1968
Aspirin has been a standard pain killer that was introduced patent free from the German company Bayer. Over the past 15 years or so, it has been recommended for daily use in certain cases of people having heart problems. This is because aspirin is a blood thinner.
Anything that was collected and patent in the year it was made, an issue year can be determined between partners or individual on an exact date and time...
No way to tell. You can look up that patent, and it will tell you what year that patent was granted- but there is no way of telling when it was made, other than AFTER that patent was granted.
To cite a patent in APA format, include the inventor's name, the patent number, the title of the patent, the publication date, and the source of the patent. Format it as follows: Inventor(s). (Year). Title of patent (Patent No. xxxxxx). Source.
The Wilkinson razor with patent number 321115 was produced in the year 1931.
Asprin was first discovered by a French Chemist named Charles Frederic Gerhardt in the year 1853, but it was not called aspirin until 1899.
According to Google Patents, patent D161783 was dated 1950.
1853
1867