Patent US1374802A successfully refreshed from Google Patents.
Patent US2494380A successfully refreshed from Google Patents.
US2494380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guided carriage means for flushing the interior of lengths of pipe
Assignee: Phillips Petroleum Co
•
Filing: 1945-12-10
•
Granted: 1950-01-10
•
Expires: 1965-12-10
Abstract
No abstract record available.
Inventors
- 👤 Carl G Ellig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:28
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/043; F; F16; F16L; F16L2101/00; F16L2101/10; F16L2101/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US620224A
Cited
US1721444A
Cited
US672296A
Cited
AT11393B
Cited
US728287A
Cited
US949622A
Cited
US1014333A
Cited
US1729781A
Cited
US2018757A
Cited
US2152036A
Cited
US2285298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |