| 1921 | Bergquist Gap Pad HC 3.0 (TGP HC3000) | |
| 1922 | Bergquist Gap Pad HC 5.0 (TGP HC5000) | |
| 1923 | Bergquist Gap Pad VO (TGP 800VO) | |
| 1924 | Bergquist Gap Pad VO Ultra Soft (TGP 1000VOUS) | |
| 1925 | Bergquist Gap Pad VO Ultimate (TGP 1300U) | |
| 1926 | Bergquist Gap Pad VO Soft (TGP 800VOS) | |
| 1927 | Bergquist Gap Pad VO Ultra Soft-B (TGP 1000VOUSB) | |