Primary
PKS‑hosted scans are treated as primary documents.
Patent Archive
These PDFs are the canonical primary sources for technical claims. OCR summaries exist but are unverified; citations should point directly to the PDF scans.
Timber transport & log‑flume systems
Early patents for log transport, sorting, and artificial channels.
Water conduits & flow control
Water‑flow guidance, conduits, and related apparatus.
Turbines & lifting systems
Air turbine and fluid/gas lifting patents.
Soil cultivation & agriculture
Soil‑cultivation devices and micronutrient applications (later patents).
Process & reaction systems
Later patents on mixing and reaction‑chamber devices.
PKS Patent PDFs
pat-113-487 Primary
pat-113-526 Primary
pat-113-772-usa Primary
pat-113-848 Primary
pat-113-848-de Primary
pat-114-660 Primary
pat-117-749 Primary
pat-118-713 Primary
pat-122-144 Primary
pat-125-819 Primary
pat-136-214 Primary
pat-138-296 Primary
pat-138-296-fr Primary
pat-138-296-gb Primary
pat-142-032 Primary
pat-142-032-fr Primary
pat-143-069 Primary
pat-145-141 Primary
pat-166-644 Primary
pat-166-644-ch Primary
pat-166-644-de Primary
pat-196-680 Primary
pat-196-680-be Primary
pat-196-680-es Primary
pat-196-680-fr Primary
pat-196-680-lux Primary
pat-197-625-de Primary
pat-202-390 Primary
pat-265-991-de Primary
pat-272-278 Primary
pat-de-1-069-162 Primary
Notes
- Official patent office cross‑checks are still pending.
- Summaries in `research/02-patents.md` are OCR‑derived and require verification.