Patent US4558677A successfully refreshed from Google Patents.
Patent US3384992A successfully refreshed from Google Patents.
US3384992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plant shelter
Assignee: G I PLASTICS CORP
•
Filing: 1964-07-09
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Granted: 1968-05-28
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Expires: 1984-07-09
Abstract
No abstract record available.
Inventors
- 👤 Howard C Heffron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:06
CPC Classifications
A; A01; A01G; A01G13/00; A01G13/20; A01G13/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A SHELTER DEVICE FOR PROTECTING PLANTS IN THE EARTH FROM COLD, WIND, AND SUDDEN TEMPERATURE CHANGES OF THE AIR COMPRISING: A HOLLOW FRUSTO CONICAL SHAPED HOUSING FORMED FROM POLYSTYRENE FOAM MATERIAL, SAID HOUSING HAVING AN OPEN BOTTOM END OF CIRCULAR SHAPE AND A TOP SECTION INCLUDING A CIRCULAR TOP END, SAID CIRCULAR BOTTOM END BEING LARGER CROSS-SECTIONAL AREA THAN SAID CIRCULAR TOP END, THE MATERIAL OF SAID HOUSING BEING OF SUBSTANTIAL THICKNESS TO AFFORD AN OUTSIDE SURFACE AND AN INNER SURFACE; AN ANNULAR FLANGE INTEGRALLY FORMED TO SAID BOTTOM END FOR CONTACTING SAID GROUND AND EXTENDING HORIZONTALLY OUTWARD THEREFROM; SAID POLYSTYRENE FOAM MATERIAL CHARACTERIZED BY ITS ABILITY TO ADMIT RADIANT ENERGY THERETHROUGH FOR HEATING THE AIR INSIDE SAID HOUSING AND TO PROVIDE BY CON-
Claim 2
Dependent Claim
124 words
A SHELTER DEVICE FOR PROTECTING PLANTS IN THE EARTH FROM COLD, WIND, AND SUDDEN TEMPERATURE CHANGES OF THE AIR COMPRISING: A HOLLOW FRUSTO CONICAL SHAPED HOUSING FORMED FROM POLYSTYRENE FOAM MATERIAL, SAID HOUSING HAVING AN OPEN BOTTOM END OF CIRCULAR SHAPE AND A TOP SECTION INCLUDING A CIRCULAR TOP END, SAID CIRCULAR BOTTOM END BEING LARGER CROSS-SECTIONAL AREA THAN SAID CIRCULAR TOP END, THE MATERIAL OF SAID HOUSING BEING OF SUBSTANTIAL THICKNESS TO AFFORD AN OUTSIDE SURFACE AND AN INNER SURFACE; AN ANNULAR FLANGE INTEGRALLY FORMED TO SAID BOTTOM END FOR CONTACTING SAID GROUND AND EXTENDING HORIZONTALLY OUTWARD THEREFROM; SAID POLYSTYRENE FOAM MATERIAL CHARACTERIZED BY ITS ABILITY TO ADMIT RADIANT ENERGY THERETHROUGH FOR HEATING THE AIR INSIDE SAID HOUSING AND TO PROVIDE BY CON-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |