US Patent 3,788,097
| # | Angle | Facets | Notes |
|---|---|---|---|
| G1 | 90.00° | 1 3 5 7 9111315171921232527293133353739414345474951535557596163656769717375777981838587 | |
| P1 | 44.00° | 2 61014182226303438424650545862667074788286 | |
| P2 | 43.00° | 88 8162432404856647280 |
| # | Angle | Facets | Notes |
|---|---|---|---|
| C1 | 40.84° | 2 61014182226303438424650545862667074788286 | |
| C2 | 37.00° | 88 8162432404856647280 | |
| C3 | 30.00° | 412202836445260687684 | |
| T | 0.00° | 88 |