US3274730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underground gas diffusion system
Assignee: Whirlpool Corp
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Filing: 1964-05-08
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Granted: 1966-09-27
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Expires: 1984-05-08
Abstract
No abstract record available.
Inventors
- 👤 Robert N Bose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
A; A01; A01G; A01G7/00; A01G7/02; A01G31/00; A01G31/02; Y; Y02; Y02P; Y02P60/00; Y02P60/20; Y02P60/21
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
147 words
A DEVICE FOR STERILIZING SOIL CONTAINING MOISTURE AND FOR SUPPLYING CARBON DIOXIDE TO PLANTS GROWING IN SAID SOIL AND HAVING BELOW THE SOIL AND ABOVE THE SOIL PORTIONS, COMPRISING: A SOURCE OF STEAM; GAS PERMEABLE CONDUIT MEANS POSITIONED IN SAID SOIL; MEANS FOR DIRECTING STEAM FROM SAID SOURCE INTO SAID CONDUIT MEANS FOR STERILIZING CONTACT WITH SAID SOIL; MEANS ENCLOSING SAID SOIL AND SAID PLANTS; A GASEOUS CARBON DIOXIDE SUPPLY MEANS; AN AIR SUPPLY MEANS; MEANS FOR MIXING CARBON DIOXIDE AND AIR FROM THE RESPECTIVE SUPPLY MEANS TO FORM A MIXTURE; AND MEANS FOR FLOWING SAID MIXTURE FROM SAID SUPPLY MEANS, THROUGH SAID CONDUIT MEANS AND INTO SAID SOIL FOR CONTACT WITH SAID BELOW SOIL PORTIONS, FOR SOLUTION IN SAID MOISTURE, AND FOR UPWARD DIFFUSION CONTACT WITH SAID ABOVE SOIL PORTIONS, SAID ENCLOSING MEANS SERVING TO MAINTAIN SAID CARBON DIOXIDE IN CONTACT WITH SAID ABOVE SOIL PORTIONS.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |