For information - my colleague Steve Van Dulken brought the following website to my attention today.
Patent and Trademark Depository Library Association
They have added the following historical data to their website;
Historical Patent and Trademark Databases
• Design Patents to 1873
• Disclaimer Patents 1837-1873
• Extension Patents to 1865
• Improvement Patents to 1861
• Reissue Patents 1838-1873
• Trademarks 1870-1873
• Utility Patents 1-65000
• Utility Patents 65000-100000
• Utility Patents 100001-146119
• X-Patents (names, dates, PNs only)
• X-Patents (with added fields)
See you all at the AGM!