US3087560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water well strainer
Assignee: Clayton Mark and Co
•
Filing: 1961-05-15
•
Granted: 1963-04-30
•
Expires: 1981-05-15
Abstract
No abstract record available.
Inventors
- 👤 Richard J Dodson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:58
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/08; E21B43/088; E21B43/086; F; F04; F04B; F04B53/00; F04B53/10; F04B53/1037
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A WELL TUBING SECTION HAVING A BOTTOM END AND A TOP END ADAPTED TO BE DRIVEN INTO THE GROUND BOTTOM END FIRST, COMPRISING AN INNER TUBE HAVING A SERIES OF PERFORATIONS THERETHROUGH INTERMEDIATE THE ENDS OF THE INNER TUBE, A FILTER SCREEN CONTIGUOUSLY OVERLYING AND SURROUNDING SAID INNER TUBE AND COVERING SAID PERFORATIONS, AND AN OUTER JACKET CONTIGUOUSLY OVERLYING AND SURROUNDING SAID SCREEN, SAID JACKET BEING OF WIDE MESH EXPANDED SHEET METAL AND PROVIDING A LATTICE NETWORK OF INTERCONNECTED SHEET METAL
Claim 2
Dependent Claim
81 words
A WELL TUBING SECTION HAVING A BOTTOM END AND A TOP END ADAPTED TO BE DRIVEN INTO THE GROUND BOTTOM END FIRST, COMPRISING AN INNER TUBE HAVING A SERIES OF PERFORATIONS THERETHROUGH INTERMEDIATE THE ENDS OF THE INNER TUBE, A FILTER SCREEN CONTIGUOUSLY OVERLYING AND SURROUNDING SAID INNER TUBE AND COVERING SAID PERFORATIONS, AND AN OUTER JACKET CONTIGUOUSLY OVERLYING AND SURROUNDING SAID SCREEN, SAID JACKET BEING OF WIDE MESH EXPANDED SHEET METAL AND PROVIDING A LATTICE NETWORK OF INTERCONNECTED SHEET METAL
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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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |