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Inventor

THOMANN ROLAND

CH8 patents
⚠️ This page may combine multiple inventors who share the name “THOMANN ROLAND”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

POLYDRAIN INC

3 patents
US4553874ANov 19, 1985

Slotted drainage grate with support

POLYDRAIN INC63 citations94
US4515498AMay 7, 1985

Slotted drainage grate with support

POLYDRAIN INC55 citations94
US4621939ANov 11, 1986

Drainage channel

POLYDRAIN INC69 citations92

ABT INC

3 patents
US5110235AMay 5, 1992

Locking component for securing a cover on a frame

ABT INC27 citations91
US5106231AApr 21, 1992

Drainage channel having improved coping for receiving grate

ABT INC31 citations91
US5489163AFeb 6, 1996

Drainage channel

ABT INC15 citations72

THOMANN ROLAND

2 patents
US5026202AJun 25, 1991

Sidewall extension member for a drainage channel

THOMANN ROLAND44 citations90
US4630962ADec 23, 1986

Drainage channel with locking grate

THOMANN ROLAND42 citations87