| Number | Name | Date | Kind |
|---|---|---|---|
| D85320 | Bowman | Oct 1931 | |
| D109025 | Perkins | Mar 1938 | |
| D114085 | Lockart | Apr 1939 | |
| D114086 | Lockart | Apr 1939 | |
| D193392 | Kingsbury | Aug 1962 | |
| D196971 | Virkkala | Nov 1963 | |
| D198626 | Lockart et al. | Jul 1964 | |
| D210372 | Behnk et al. | Mar 1968 | |
| D210373 | Behnk et al. | Mar 1968 | |
| D217924 | Hagen et al. | Jun 1970 | |
| D241429 | Michaelis | Sep 1976 | |
| D250635 | McLean | Dec 1981 | |
| D293477 | Pirosko et al. | Dec 1987 | |
| 298418 | Shaw | May 1984 | |
| 402073 | Falconnier | Apr 1989 | |
| 758973 | Kaye | May 1904 | |
| 827464 | Pedrick | Jul 1906 | |
| 1425102 | Keppler | Aug 1922 | |
| 1855987 | Rammer | Apr 1932 | |
| 1994387 | Despret | Mar 1935 | |
| 2086185 | Keaney | Jul 1937 | |
| 2110885 | Lytle | Mar 1938 | |
| 2110900 | Zimmerman et al. | Mar 1938 | |
| 2115264 | Henderson | Apr 1938 | |
| 2115513 | Bauer | Apr 1938 | |
| 2226220 | Cox | Dec 1940 | |
| 2281272 | Knudsen | Apr 1942 | |
| 2281524 | Meyers | Apr 1942 | |
| 2306320 | Rapp | Dec 1942 | |
| 2322591 | Rapp | Jun 1943 | |
| 2333723 | Jordan | Nov 1943 | |
| 2355262 | Blau | Aug 1944 | |
| 2714816 | Pennell | Aug 1955 | |
| 2724260 | D'Eustachio | Nov 1955 | |
| 2975853 | Friend | Mar 1961 | |
| 3396504 | DeOliveira | Aug 1968 | |
| 3798861 | Weiss | Mar 1974 | |
| 4023319 | Kurata | May 1977 | |
| 4537001 | Uppstrom | Aug 1985 | |
| 4572699 | Rinninger | Feb 1986 | |
| 4636413 | Wittman et al. | Jan 1987 | |
| 4648226 | Manon | Mar 1987 | |
| 4651486 | Erickson et al. | Mar 1987 | |
| 4719735 | Fleming, Jr. et al. | Jan 1988 | |
| 4753622 | Nakama | Jun 1988 | |
| 4852321 | Fleming, Jr. et al. | Aug 1989 |
| Number | Date | Country |
|---|---|---|
| 567594 | Mar 1958 | BEX |
| 848079 | FRX | |
| 470835 | Nov 1935 | GBX |
| Entry |
|---|
| "PC Glass Block Panels, Walls, Windows, Exterior and Interior Application" published by Pittsburgh Corning Corporation in Dec., 1983. |
| "Glass Block by Pittsburgh Corning Exterior and Interior Applications" published by Pittsburgh Corning Corporation in Mar., 1978. |