Electricity: conductors and insulators – Insulators – Combined
Reexamination Certificate
2006-12-22
2011-11-01
Patel, Dhirubhai R (Department: 2835)
Electricity: conductors and insulators
Insulators
Combined
C174S0110BH, C174S0140BH, C174S1520GM, C174S13700R, C174S650000, C156S069000
Reexamination Certificate
active
08049108
ABSTRACT:
A high voltage bushing for a high voltage device containing insulating liquid includes a voltage grading shield, improving performance and facilitating manufacturing.
REFERENCES:
patent: 3962667 (1976-06-01), Link
patent: 4159401 (1979-06-01), Kamata
patent: 4584429 (1986-04-01), Raketti et al.
patent: 0109836 (1984-05-01), None
PCT/ISA/210—International Search Report—Mar. 27, 2007.
PCT/ISA/237—Written Opinion of the International Searching Authority—Mar. 27, 2007.
Gustavsson Dan G.
Hartings Ralf
Heyman Olof
Jacobson Björn
Johansson Rutger
ABB Technology Ltd.
Franklin Eric J.
Patel Dhirubhai R
Venable LLP
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