You got it right. The Pats' run looks like it ranks 15th worst, all time:
1. Cardinals ........... 1937-45/ 17-75-4 / ....... PCT: .198 / 9 years
2. Eagles ................ 1934-42/ 20-77-3 / ...... PCT: .215 / 9 years
3. Lions .................. 2001-09/ 33-111-0 / .... PCT: .229 / 9 years
4. Dayton Triangles 1921-29/ 13-49-6 / ...... PCT: .235 / 9 years
5. Browns ............... 2009-17/ 34-110-0 / .... PCT: .236 / 9 years
6. Steelers .............. 1933-41/ 25-71-6 / ........ PCT: .274 / 9 years
7. Saints ................. 1967-75/ 32-89-5 / ........ PCT: .274 / 9 years
8. Broncos ............. 1960-68/ 34-89-3 / ....... PCT: .281 / 9 years
9. Packers .............. 1948-58/ 37-93-2 / ....... PCT: .288 / 11 years
10. Rams ................ 2007-16/ 46-113-1 / ....... PCT: .290 / 10 years
11. Buccaneers ....... 1976-87/ 52-127-1 / ........ PCT: .291 / 12 years
12. Jaguars ............. 2008-16/ 42-102 / ......... PCT: .292 / 9 years
13. Bengals ............. 1991-2000/ 47-113-0 / ... PCT: 294 / 10 years
14. Raiders ............. 2006-14/ 43-102 / .......... PCT: .296 / 9 years
15. Patriots ............. 1967-75/ 37-88-1 /.......... PCT: .297 / 9 years
s.