CPC B21D53/78
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CPC B21D53/78 is a technology classification of patents about making propeller blades from sheet or similar metal shapes.[1][2]
Tech classification tree:
- CPC B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F)
- Processing sheet metal or metal tubes, or processing metal profiles according to any of groups B21D1/00 - B21D45/00, in the manufacture of finished or semi-finished articles
- CPC B21D53/00 Making other particular articles (making wire fabrics B21F; making chains or chain parts B21L)
- CPC B21D53/78 propeller blades; turbine blades
References
- ↑ CPC B21D53/00 element at Espacenet web site
- ↑ CPC B21D53/00 element listed at USPTO
This wiki has 4 patents in category "CPC B21D53/78".
Patents in category CPC B21D53/78
- Patent FR-1907-391430 (English title: Propeller system for aerial navigation, Filing date: 1907-08-28, Applicant firm: Société Antoinette)
- Patent FR-1909-406111 (English title: Propellers and method of constructing them, Inventors: Spencer Heath, Filing date: 1909-08-14)
- Patent DE-1911-251309 (English title: Process for making hollow, light, resilient metal propellers, Inventors: Pierre Jacomy • François Jahan, Filing date: 1911-08-17)
- Patent DE-1916-304238 (English title: Hollow sheet metal propeller, Filing date: 1916-10-22)
| Enclosing categories | CPC B21D53/00, CPC B21D |
|---|---|
| Subcategories | |
| Keywords | Propeller, Construction |
| Start year | |
| End year |
