Uninterruptible power supply controller

Equipment for production – distribution – or transformation of ene – Energy conversion or transformation – Transformer – rectifier or casing therefor

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D13123

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D03391019

REFERENCES:
patent: D225751 (1973-01-01), Urquhart et al.
patent: D226011 (1976-01-01), Urquhart et al.
patent: D303664 (1989-09-01), Harden et al.
patent: D311899 (1990-11-01), Lenzing et al.
patent: D314174 (1991-01-01), Wong
patent: D316396 (1991-04-01), Decosse et al.
SPS on p. 34 of Businessland 9-86 catalog, Located in Examiner Nunn's office.
UPS on p. 45 of Electrical Systems Design, 7-89, Located in PTO Scientific Library.
Exide Micro UPS from 3-90 brochure, Located in examiner's office.
UPS on p. 34 of Electrical Systems Design, 5-90, Located in PTO Scientific Library.

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