branch E. F. HOUGHTON & CO. (Connecticut (US)) | details | |
branch E. F. HOUGHTON & CO (Maryland (US)) | details | |
branch E. F. HOUGHTON & CO (Maryland (US)) | details | |
branch E. F. HOUGHTON & CO. (Missouri (US)) | details | |
branch E. F. HOUGHTON & CO. (Missouri (US)) | details |
Mark Text | Image | Register | NICE classifications | Registration Date | Expiry Date | ||
---|---|---|---|---|---|---|---|
HYDRA-VIS | United States Patent and Trademark Office | 1 | 1984-08-14 | 2005-05-21 | historic | details | |
STABILEX | United States Patent and Trademark Office | 1 | 1981-08-04 | 2002-07-20 | historic | details | |
HLP | United States Patent and Trademark Office | 3 | 1975-09-30 | historic | details | ||
HLP | United States Patent and Trademark Office | 1 | 1975-09-30 | historic | details | ||
SEAL-N-SHIELD | United States Patent and Trademark Office | 2 | 1975-01-28 | historic | details |