The broken line showing of the base, concentrator attachment, fan blades, hub, and bottom plug is included for the purpose of illustrating environmental structure and forms no part of the claimed design.
The broken line showing of the base, concentrator attachment, fan blades, hub, and bottom plug is included for the purpose of illustrating environmental structure and forms no part of the claimed design.
Number | Name | Date | Kind |
---|---|---|---|
3275224 | Helmuth | Sep 1966 | A |