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To identify the sizes of its premium bench planes, the company used a numbering system based on the length of the sole.
The earliest planes were identified by a size number cast into the bed.
The Bundle number is unimportant to most collectors.
The number listed for each year in the table is the first number issued that year. If your number is higher, but less than the number for the next year, then your item had it's design registered during that year.
The design patent protects only the appearance of an article, but not its structural or functional features.
Sometime in the latter 1960s, Millers Falls began making changes to the numbers on its planes.
Neither the reason for—nor the timing of—the changes is clear.
By using the information below you can find the date a design was registered. Remember this date is just when the design was registered.
An item with a registry mark or number could have been produced after the date of the registry mark.