| US Patent: 2,407,478 
 | 
| Antiknock or detonation dampening device | 
| 
| Patentees: |  
 | Albert G. H. Vanderpoel (exact or similar names) - Hawthorne, CA |  | Harold E. Crozier (exact or similar names) - Hawthorne, CA |  
 
 
 
 
 
 | 
| Patent Dates: |  
| Applied: | Mar. 20, 1944 |  
| Granted: | Sep. 10, 1946 |  USPTO (New site tip)
 Google Patents
 Report data errors or omissions to steward 
                        Jeff Joslin
 Vintage Machinery entry for Crozier Machine Tool Co.
 
 | 
| 
| Description: |  | This invention avoids engine knock by providing "automatic means for introducing steam vapor to the carburetor..." |  |