Assertion: angle neck bottle | /r/HasSubevent | a valve mark
Facets:
value: most likely
type: DEGREE
value: on the base of the bottles
type: LOCATION
Source sentences:
text: At least one manufacturer (Cumberland Glass Manufacturing Company, Bridgeton, NJ) invented and used a type of semi-automatic press-and-blow machine in 1910 which did produce narrow neck bottles that most likely resulted in a valve mark on the base of the bottles produced in the early 1910s (Lockhart pers.