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| Number | Title | Issue Date |
| 5056262 | Releasable window guard assembly A window guard screen and frame assembly installable on the jamb of a building window to prevent unauthorized access thereto. The screen is fabricated of a metal sheet whose margins are folded in to define channel-like end and side branches bordering a pl... | 10/15/1991 |
| 4993187 | Releasable window guard assembly A window guard screen and frame assembly installable on the jamb of a building window to prevent unauthorized access therethrough. The assembly screen is fabricated from a single sheet of metal having folded-in margins to define channel-like upper and low... | 02/19/1991 |