Methods and means for securing door frames in openings therefor

Static structures (e.g. – buildings) – Frangible section or means

Patent

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Details

52210, 52213, 52214, 52717, 52741, 85 72, E06B 160

Patent

active

039993396

ABSTRACT:
Improved means for and methods of removably fastening door frames into door openings where the door opening is defined by masonry construction, concrete columns and the like (not wood).

REFERENCES:
patent: 1451012 (1923-04-01), Ellison
patent: 2282711 (1942-05-01), Eklund
patent: 2309452 (1943-01-01), Hasenburger et al.
patent: 2595506 (1952-05-01), Backman
patent: 2743795 (1956-05-01), Taubman
patent: 3078002 (1963-02-01), Rodgers, Jr.
patent: 3448651 (1969-06-01), Passer
patent: 3469350 (1969-09-01), Lange
patent: 3546998 (1970-12-01), Lerich
patent: 3599381 (1971-08-01), Gartner

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