Patent US4879152A successfully refreshed from Google Patents.
Patent US2763288A successfully refreshed from Google Patents.
US2763288A
Expired / Lapsed
US
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Apparatus for killing and removing roots from submarine pipes
Assignee: Individual
•
Filing: 1955-08-04
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Granted: 1956-09-18
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Expires: 1975-08-04
Abstract
No abstract record available.
Inventors
- 👤 Homer R Tharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:09
CPC Classifications
E; E03; E03F; E03F9/00; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8593; Y10T137/85978; Y10T137/85986; Y10T137/85994
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2231229A
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US2311197A
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US2413710A
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US2462034A
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US2584661A
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US2694022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |