Building units and construction elements – Structure – Swimming pool
Patent
1990-10-30
1993-02-23
Zarfas, Louis S.
Building units and construction elements
Structure
Swimming pool
Patent
active
D03335240
REFERENCES:
patent: D306474 (1990-03-01), Scheurer
patent: 1382831 (1921-06-01), Hilker
patent: 3063062 (1962-11-01), Logan
patent: 3064273 (1962-11-01), Kwake
patent: 3229309 (1966-01-01), Knodel
patent: 3608099 (1971-09-01), Wall
patent: 3855643 (1974-12-01), Sanford et al.
patent: 4135257 (1979-01-01), Lof
patent: 4139117 (1979-02-01), Diaz
patent: 4941222 (1990-07-01), Prager
patent: 4953239 (1990-09-01), Gadsby
Gernstein Terry M.
Mortimer Paula A.
Zarfas Louis S,.
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