CUTTING AN INTERNAL TAPER PIPE THREAD
Operations on the vertical milling machine. Cutting an internal taper pipe thread; no.9.
Registration MP14587 Uncertain
- Term began
- not parsed
- Claimant
- Atlas educational film co.
- Class
- MP — published motion picture other than a photoplay (numbering series begun Sept. 1928)
- Finding
- no registration date parsed from the catalog entry
The catalog entry has a problem (missing date, or a number that does not fit its year), so the renewal check cannot be relied on.
Catalog entry
Catalog of Copyright Entries, New Series, Part 1 Group 3: Dramatic Compositions, Motion Pictures, 1944, Internet Archive catalogofcopyrig171libr (OCR text), lines 7281–7293.
Cutting a dovetail taper slide. See Machine shop work. Operations on the vertical milling ma- chine. Cutting a round end keyway. See Machine shop work. Operations on the vertical milling ma- chine. Cutting an internal taper pipe thread; no.9. © title, descr. & 2 prints recd. Mar. 13, 1944; M 14587; Atlas educational film co., Qak Park, Ill. 2146
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