Jabsco pump
The first self-priming neoprene vane pumps date back to a 1953 patent issued to Jabsco. The US patent USA no. 422,191 for a "self-priming neoprene pump."  In 1982 another patent was given to Jabsco UK (1982-12-23, Priority to GB08205279A) extending the number of blades of the neoprene impeller to 16.