US3218759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plant protection device
Assignee: Dow Chemical Co
•
Filing: 1961-11-30
•
Granted: 1965-11-23
•
Expires: 1981-11-30
Abstract
No abstract record available.
Inventors
- 👤 Keith C Barrons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:06
CPC Classifications
A; A01; A01G; A01G13/00; A01G13/20; A01G13/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AS AN ARTICLE OF MANUFACTURE FOR THE WINTER PROTECTION OF AERIAL PARTS OF PERENNIAL PLANTS THAT ARE GROWING IN EARTH AND HAVE SEMI-HARDY AERIAL PARTS THAT ARE PRODUCED DURING A PRINCIPAL GROWING SEASON AND ARE SUSCEPTIBLE OF WINTER KILLING, A LPROTECTIVE COVER STRUCTURE HAVING A MAJOR VERTICAL AXIS AND SUBSTANTIALLY PARALLEL THERETO A SELF-SUPPORTING WALL THAT DEFINES AN UPPER END AND A LOWER END, EACH END ESSENTIALLY IN A PLANE, SAID WALL BEING CURVED, AND CLOSED, SAID MAJOR VERTICAL AXIS INTERSECTING SAID LOWER END PLANE IN AN ANGLE OF NOT LESS THAN ABOUT 85 DEGREES, SAID STRUCTURE BEING OPEN AT THE UPPER AND LOWER END AND OPENABLY CLOSABLE BY FLEXURE AT THE UPPER END, BEING COMPOSED ESSENTIALLY OF FLEXIBLE, TOUGH, FAIRLY
Claim 2
Dependent Claim
121 words
AS AN ARTICLE OF MANUFACTURE FOR THE WINTER PROTECTION OF AERIAL PARTS OF PERENNIAL PLANTS THAT ARE GROWING IN EARTH AND HAVE SEMI-HARDY AERIAL PARTS THAT ARE PRODUCED DURING A PRINCIPAL GROWING SEASON AND ARE SUSCEPTIBLE OF WINTER KILLING, A LPROTECTIVE COVER STRUCTURE HAVING A MAJOR VERTICAL AXIS AND SUBSTANTIALLY PARALLEL THERETO A SELF-SUPPORTING WALL THAT DEFINES AN UPPER END AND A LOWER END, EACH END ESSENTIALLY IN A PLANE, SAID WALL BEING CURVED, AND CLOSED, SAID MAJOR VERTICAL AXIS INTERSECTING SAID LOWER END PLANE IN AN ANGLE OF NOT LESS THAN ABOUT 85 DEGREES, SAID STRUCTURE BEING OPEN AT THE UPPER AND LOWER END AND OPENABLY CLOSABLE BY FLEXURE AT THE UPPER END, BEING COMPOSED ESSENTIALLY OF FLEXIBLE, TOUGH, FAIRLY
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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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |