Three-blade propeller
Description
FIG. 1 is a front and right side perspective view of a three-blade propeller showing our new design;
FIG. 2 is a right side elevation view thereof;
FIG. 3 is a front elevation view thereof; and
FIG. 4 is a rear elevation view thereof.
Referenced Cited
Patent History
Patent number: D324364
Type: Grant
Filed: Mar 1, 1990
Date of Patent: Mar 3, 1992
Inventors: R. Douglas Hannon (Tulsa, OK), George E. Lackman (Tulsa, OK)
Primary Examiner: Kay H. Chin
Law Firm: Wood, Phillips, Mason, Recktenwald & Van Santen
Application Number: 7/486,732
Type: Grant
Filed: Mar 1, 1990
Date of Patent: Mar 3, 1992
Inventors: R. Douglas Hannon (Tulsa, OK), George E. Lackman (Tulsa, OK)
Primary Examiner: Kay H. Chin
Law Firm: Wood, Phillips, Mason, Recktenwald & Van Santen
Application Number: 7/486,732
Classifications
