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US2833006A
Expired / Lapsed
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Method of increasing the groundline protection of wood poles treated with oil-type preservatives
Assignee: United States Steel Corp
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Filing: 1955-08-11
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Granted: 1958-05-06
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Expires: 1975-08-11
Abstract
No abstract record available.
Inventors
- 👤 John W Andrews
- 👤 Charles W Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:30
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/02; B27K3/0235; B27K3/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
43 words
AN INSTALLATION COMPRISING A WOOD POLE TREATED WITH OIL-TYPE PRESERVATION INSERTED IN THE GROUND, A ZONE OF POWDERED WATER INSOLUBLE HYDROGEN ION EXCHANGE MATERIAL IN CONTACT WITH THE POLE IN THE PROXIMITY OF THE GROUNDLINE, AND A COVERING OF SOIL OVER SAID MATERIAL.
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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |