USD311950SExpiredUtility

Gas-fired boiler for central heating and hot water

Assignee: POTTERTON INT LTDPriority: Jun 20, 1988Filed: Dec 12, 1988Granted: Nov 6, 1990

Est. expiryJun 20, 2008(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a gas-fired boiler for central heating and hot water, as shown and described.

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