US2991807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit
Assignee: Individual
•
Filing: 1956-06-04
•
Granted: 1961-07-11
•
Expires: 1976-06-04
Abstract
No abstract record available.
Inventors
- 👤 Roland P Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:09
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/16; F16L3/18; F16L57/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US836017A
Cited
US960010A
Cited
US1351133A
Cited
US1919495A
Cited
US1969879A
Cited
US1987517A
Cited
US2285387A
Cited
US2230306A
Cited
US2339987A
Cited
GB604729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |