Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Pirelli and C SpA
Original Assignee
Pirelli SpA
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Publication date
Application filed by Pirelli SpAfiledCriticalPirelli SpA
Application grantedgrantedCritical
Publication of FR769872ApublicationCriticalpatent/FR769872A/fr
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
B29D22/00—Producing hollow articles
B29D22/04—Spherical articles, e.g. balls
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR769872D1933-04-191934-03-09Procédé pour la fabrication des balles en caoutchouc
ExpiredFR769872A
(fr)