|Publication number||USD219835 S|
|Publication date||Feb 2, 1971|
|Filing date||Nov 24, 1969|
|Publication number||US D219835 S, US D219835S, US-S-D219835, USD219835 S, USD219835S|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent Oflfice 123E311? BACK PACK VACUUM CLEANER Louis L. Otto, North Muskegon, and Cecil B. Land, Muskegon, Mich., assignors to Clarke Floor Machine Division, Studebaker Corporation, Muskegon, Mich.
Filed Nov. 24, 1969, Ser. No. 20,233
Term of patent 14 years Int. Cl. DIS-06 US. Cl. D49--11 FIG. 1 is a rear perspective view of the invention;
FIG. 2 is a right side perspective view of the invention;
FIG. 3 is a left side perspective View of the invention;
FIG. 4"is a plan perspective view of the invention as it rests on runners on the floor; and
FIG. 5 is a plan perspective view of the invention as it stands on legs on the floor.
The ornamental design for a back pack vacuum cleaner, as shown.
PAGE 3 References Cited UNITED STATES PATENTS 4/1966 Nelson 1/1965 Barba OTHER REFERENCES Automotive News, Mar. 26, 1962, p. 32, H vacuum cleaner.
A. HUGO WORD, Primary Examiner
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US6647586||Dec 7, 2001||Nov 18, 2003||Alma L. Rogers||Portable vacuum cleaning apparatus|