Patent US3299641A successfully refreshed from Google Patents.
US3299641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ditch liner
Assignee: Granite City Steel Co
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Filing: 1964-07-22
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Granted: 1967-01-24
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Expires: 1984-07-22
Abstract
No abstract record available.
Inventors
- 👤 Richard B Heagler
- 👤 Matt S Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:47
CPC Classifications
A; A01; A01B; A01B13/00; E; E02; E02B; E02B5/00; E02B5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
AN IRRIGATION DITCH LINER ASSEMBLY COMPRISING A PLURALITY OF LINER SECTIONS EACH HAVING TRANSVERSE END LIPS AND LONGITUDINAL SIDE FLANGES, SAID LINER SECTIONS BEING POSITIONABLE IN AN IRRIGATION DITCH IN ALIGNMENT WITH SAID END LIPS SPACED APART, SAID SIDE FLANGES HAVING MARGINS ENGAGED IN THE SURFACE ALONG THE IRRIGATION DITCH TO SEAL THE SIDES OF SAID LINER SECTION AGAINST WIND LIFT EFFECTS, BOTTOM BATTEN MEANS IN THE DITCH IN POSITION TO SUPPORT ADJACENT END LIPS, SAID BOTTOM BATTEN MEANS BEING A CHANNEL HAVING SPACED MARGINAL FLANGES DIRECTED TO ENGAGE IN THE IRRIGATION DITCH, TOP BATTEN MEANS ENGAGED UPON ADJACENT END LIPS, MEANS CONNECTING SAID TOP AND BOTTOM BATTEN MEANS TOGETHER TO CLAMP SAID END LIPS THEREBETWEEN, AND MEANS TO SEAL THE CONNECTION BETWEEN SAID BATTEN MEANS AND SAID END LIPS AGAINST SEEPAGE OF IRRIGATION FLUID THROUGH THE CONNECTION.
Claim 2
Dependent Claim
138 words
AN IRRIGATION DITCH LINER ASSEMBLY COMPRISING A PLURALITY OF LINER SECTIONS EACH HAVING TRANSVERSE END LIPS AND LONGITUDINAL SIDE FLANGES, SAID LINER SECTIONS BEING POSITIONABLE IN AN IRRIGATION DITCH IN ALIGNMENT WITH SAID END LIPS SPACED APART, SAID SIDE FLANGES HAVING MARGINS ENGAGED IN THE SURFACE ALONG THE IRRIGATION DITCH TO SEAL THE SIDES OF SAID LINER SECTION AGAINST WIND LIFT EFFECTS, BOTTOM BATTEN MEANS IN THE DITCH IN POSITION TO SUPPORT ADJACENT END LIPS, SAID BOTTOM BATTEN MEANS BEING A CHANNEL HAVING SPACED MARGINAL FLANGES DIRECTED TO ENGAGE IN THE IRRIGATION DITCH, TOP BATTEN MEANS ENGAGED UPON ADJACENT END LIPS, MEANS CONNECTING SAID TOP AND BOTTOM BATTEN MEANS TOGETHER TO CLAMP SAID END LIPS THEREBETWEEN, AND MEANS TO SEAL THE CONNECTION BETWEEN SAID BATTEN MEANS AND SAID END LIPS AGAINST SEEPAGE OF IRRIGATION FLUID THROUGH THE CONNECTION.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |