1920s; Johnson Automobile Lock Co. - Chicago

Five original Canadian patent document sets issued to Colvin L. Johnson of Chicago, Illinois, inventor and assignor to the Johnson Automobile Lock Co., representing the international extension of early American automotive security technology into the Canadian market. Each set is bound with original green ribbon ties and retains its embossed red patent seal, with ornate "Dominion of Canada" headers featuring heraldic crests and finely engraved borders.

The documents detail patents for automobile spare tire locks, locking cables, and related anti-theft devices-mechanical systems designed to secure externally mounted components during a period when vehicle accessories were particularly vulnerable. The sets include handwritten and typed entries naming Colvin L. Johnson and the Johnson Automobile Lock Co., alongside formal language granting exclusive rights within Canada. Several sheets show red underline accents emphasizing key legal passages, while internal pages feature technical drawings illustrating cable housings, locking mechanisms, and sectional engineering views. Patent numbers such as 200873, 204765, and 206252 are visible across the group, reinforcing their official registry within the Canadian system. The combination of American inventor, Canadian issuance, and cross-border industrial application highlights the broader commercialization strategy of early automotive accessory manufacturers expanding beyond domestic markets.

Johnson Automobile Lock Co. was an early 20th-century manufacturer specializing in automotive locking systems, contributing to the development of theft-prevention hardware during the rapid rise of automobile ownership across North America.

Shows moderate age and handling wear throughout including edge wear, corner loss, creasing, and light toning. Some minor tears and paper loss are present along margins, with expected wear to ribbon bindings; seals remain intact and documents are legible and complete.

8" W x 12.25" H each

MM - C-20027 - 040226

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