发明公开
EP0589695A1 Electric lamp with threaded base 失效
Elektrische Lampe mit Schraubsockel。

Electric lamp with threaded base
摘要:
A lamp envelope (14) has a tubular end for receiving a threaded base (60). The tubular end is provided with a circumferential series of protrusions (28) and cavities (30). When the lamp is assembled the base is engaged over the protrusions (28) and then deformed into the cavities (30) using rollers.
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