AU114710B2 - Improvements in filters - Google Patents

Improvements in filters

Info

Publication number
AU114710B2
AU114710B2 AU648/41A AU64841A AU114710B2 AU 114710 B2 AU114710 B2 AU 114710B2 AU 648/41 A AU648/41 A AU 648/41A AU 64841 A AU64841 A AU 64841A AU 114710 B2 AU114710 B2 AU 114710B2
Authority
AU
Australia
Prior art keywords
filters
Prior art date
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.)
Expired
Application number
AU648/41A
Other versions
AU64841A (en
Inventor
Johnson Evans David
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of AU114710B2 publication Critical patent/AU114710B2/en
Publication of AU64841A publication Critical patent/AU64841A/en
Expired legal-status Critical Current

Links

AU648/41A 1941-03-06 Improvements in filters Expired AU114710B2 (en)

Publications (2)

Publication Number Publication Date
AU114710B2 true AU114710B2 (en) 1942-03-05
AU64841A AU64841A (en) 1942-03-05

Family

ID=

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