| SIC Code | Business or Product | Registrants |
|---|
|  | | |
| 2834 | Cyclopropane for anesthetic use (U.S.P. par N.F.), packaged | 1,955 |
| 3699 | Cyclotrons | * |
| 3714 | Cylinder heads, motor vehicle: gasoline engines | 366 |
| 3272 | Cylinder pipe, prestressed concrete | 32 |
| 3272 | Cylinder pipe, pretensioned concrete | 32 |
| 3541 | Cylinder reboring machines | 17 |
| 3496 | Cylinder wire cloth, made from purchased wire | * |
| 3484 | Cylinders and clips, gun: 30 mm. (or 1.18 inch) or less | * |
| 3443 | Cylinders, pressure: metal plate | 35 |
| 3561 | Cylinders, pump | 31 |
| 3931 | Cymbals and parts | 10 |
| 3845 | Cystoscopes, electromedical | 309 |
| 3841 | Cystoscopes, except electromedical | 654 |
| 2835 | Cytology and histology diagnostic products | 206 |
________
* There are SEC Registrants, but only at the 2- or 3-digit SIC Code levels. |
