Comment by eesmith

We develop a text-processing system, with patent applications as our stepping stone into electronic publishing program with full typesetting. The time-sharing core is extensible to other domains. We support the PDP series now, with long-term plans for hardware portability.

Of course, they wouldn't have applied to YC. The Bell monopoly provided a lot of funding, and the market was small as only a handful of companies needed a computerized patent application system, and as we saw, Bell Labs funded them internally.