Invention Grant
- Patent Title: Leer feeder
- Patent Title (中): 进料器
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Application No.: US16621127Application Date: 1927-02-05
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Publication No.: US1832344APublication Date: 1931-11-17
- Inventor: WITTMAN HARRY L
- Applicant: HAZEL ATLAS GLASS CO
- Assignee: Hazel Atlas Glass Co
- Current Assignee: Hazel Atlas Glass Co
- Priority: US16621127 1927-02-05
- Main IPC: C03B35/10
- IPC: C03B35/10
Public/Granted literature
- US11293262B2 Well tool device for opening and closing a fluid bore in a well Public/Granted day:2022-04-05
Information query
