Patent US3307289A successfully refreshed from Google Patents.
US3307289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic apparatus for subsurface soil sterilization
Assignee: Individual
•
Filing: 1965-11-01
•
Granted: 1967-03-07
•
Expires: 1985-11-01
Abstract
No abstract record available.
Inventors
- 👤 Lester F Lemm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:39
CPC Classifications
A; A01; A01G; A01G11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
APPARATUS FOR SUBSURFACE SOIL STERILIZATION, COMPRISING, IN COMBINATION: A TRANSPORTABLE UNIT INCLUDING A PLURALITY OF CUTTING BLADES ADAPTED TO BE SUBSTANTIALLY VERTICALLY POSITIONED IN THE GROUND AND BEING SPACED APART IN A DIRECTION TRANSVERSE TO THE DIRECTION OF FORWARD TRAVEL; ELECTRICAL POWER GENERATING MEANS CARRIED BY SAID TRANSPORTABLE UNIT; A PLURALITY OF ULTRASONIC TRANSDUCERS CARRIED BY SAID TRANSPORTABLE UNIT, EACH BEING ADAPTED TO EXTEND DOWNWARDLY BEHIND AN ASSOCIATED ONE OF SAID CUTTING BLADES; A PLURALITY OF ELECTRICAL OSCILLATORS CARRIED BY SAID TRANSPORTABLE UNIT, EACH BEING ADAPTED TO OSCILLATE AT A PREDETERMINED ULTRASONIC FREQUENCY; MEANS COUPLING SAID POWER GENERATING MEANS TO THE INPUTS OF ALL SAID OSCILLATORS FOR SUPPLYING ENERGY THERETO; AND SEPARATE MEANS COUPLING THE OUTPUT OF EACH OF SAID OSCILLATORS TO A RESPECTIVELY ASSOCIATED ONE OF SAID ULTRASONIC TRANSDUCERS FOR DRIVINGLY ENERGIZING THE SAME.
Claim 2
Dependent Claim
135 words
APPARATUS FOR SUBSURFACE SOIL STERILIZATION, COMPRISING, IN COMBINATION: A TRANSPORTABLE UNIT INCLUDING A PLURALITY OF CUTTING BLADES ADAPTED TO BE SUBSTANTIALLY VERTICALLY POSITIONED IN THE GROUND AND BEING SPACED APART IN A DIRECTION TRANSVERSE TO THE DIRECTION OF FORWARD TRAVEL; ELECTRICAL POWER GENERATING MEANS CARRIED BY SAID TRANSPORTABLE UNIT; A PLURALITY OF ULTRASONIC TRANSDUCERS CARRIED BY SAID TRANSPORTABLE UNIT, EACH BEING ADAPTED TO EXTEND DOWNWARDLY BEHIND AN ASSOCIATED ONE OF SAID CUTTING BLADES; A PLURALITY OF ELECTRICAL OSCILLATORS CARRIED BY SAID TRANSPORTABLE UNIT, EACH BEING ADAPTED TO OSCILLATE AT A PREDETERMINED ULTRASONIC FREQUENCY; MEANS COUPLING SAID POWER GENERATING MEANS TO THE INPUTS OF ALL SAID OSCILLATORS FOR SUPPLYING ENERGY THERETO; AND SEPARATE MEANS COUPLING THE OUTPUT OF EACH OF SAID OSCILLATORS TO A RESPECTIVELY ASSOCIATED ONE OF SAID ULTRASONIC TRANSDUCERS FOR DRIVINGLY ENERGIZING THE SAME.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |