Is there a distinction between a business logo and a trademark? Or indeed between these and a manufacturer's mark or just the maker's signature on a paper label? I'm not sure however simple identifying marks have been used for centuries by knife makers, blacksmiths, armourers, clockmakers, musical instrument makers, potters, coopers, printers etc. Indeed I think London's 13th century Assize of Bread - as well as fixing the weight, quality and price of loaves - ordered that every baker had to impress his own unique identifying mark into the dough before baking, not just as a mark of pride in his produce but also so that any baker selling short-weight loaves could be traced and prosecuted.
Another heavily regulated business was the brewing of ale and beer and some of the oldest still recognisable trademarks are for brewers, for example the horn symbol of Stella Artois and the rampant lion of Löwenbräu.
Stella Artois was first produced in 1926 by the Brouwerij Artois company in Leuven, Belgium, but as the Hoorn (Horn) brewery it had started operation in 1366 when it was a tavern brewing its own beer under the sign of a hunting horn.
The Löwenbräu brewery is supposed to have been founded in 1383 although it's first mention by that name is in Munich tax records of 1746. The lion emblem originates from a 17th-century fresco on the wall of the brewing house which depicted Daniel in the lions' den.
Following the UK's Trade Mark Registration Act of 1875 the very first mark to be registered was also for a brewery, the Bass Brewery of Burton-upon-Trent, with its registered label incorporating a distinctive red triangle alongside the signature of William Bass the company's founder.
The red triangle logo clearly identifies the beer's presence in Manet's 1882 painting of 'Un bar aux Folies Bergère'.
Until its closure in 2006, Britain's oldest brewing site in continuous operation was the Young and Co.'s Ram Brewery in Wandsworth, which has a recorded history dating back to the 1550s when a Humphrey Langridge leased the Ram pub and brewed beer there, hence the Young's ram symbol.
Meanwhile in 1816 John Fuller started his company brewing beer at the Griffin Brewery in Old Chiswick, which had been in operation as a brewery since the 17th century. Hence the current Fuller, Smith and Turner company's gryphon emblem.