Granted Patent
Utility
US 4,644,606 · App. 06/720,883
Lawn/garden blower/vacuum
Inventors:
Adolf Luerken, John Cannistra, John L. Zimmerer, Edward J. Pilatowicz
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Apr 8, 1985
Inventors
Adolf Luerken
John Cannistra
John L. Zimmerer
Edward J. Pilatowicz
Assignee (at issue)
McCulloch Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.