Search Results for: Sound recording apparatus operated by coins
husbandry patents (class ) miscellaneous (class / . r) modified earth's surface, e.g., sod, turf, reinforced (class / . f) potting or transplanting machine (class / . p) plant support placing machine, e.g., vine tying (class / . s) debarking, dethorning, or girdling (class / . d) water culture, apparatus
class / ) cotton boll ripening (class / ) layering (class / ) grafting (class / ) budding (class / ) tree surgery (class / ) mulching (class / ) turpentine and rubber (class / ) buckets and spouts (class / ) tools (class / ) seed testers (class / ) roll (class / ) with heater (class / ) greenhouse, apparatus...
https://patents.justia.com/patents-by-us-classification/47