IP Library › Granted Patent US 4,683,608
Granted Patent Utility
US 4,683,608 · App. 06/823,049

Alternate blower outlet for vacuum cleaner

Inventors: Robert C. Berfield, Ronald F. Meland
Patented Case View Patent ↗
Granted: Aug 4, 1987 Filed: Jan 27, 1986
Inventors
Robert C. Berfield
Ronald F. Meland
Assignee (at issue)
SHOP VAC 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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,683,608
App. No.
06/823,049
Filed
1986-01-27
Granted
1987-08-04
Kind
A