US3008738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Longfellow
Assignee: —
•
Filing: —
•
Granted: 1961-11-14
•
Expires: 1978-11-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:15
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/0036; F16L33/00; F16L33/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21603E
Cited
US1315548A
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US979460A
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GB264989A
Cited
US1801403A
Cited
US2041543A
Cited
US2100270A
Cited
FR930267A
Cited
US2490686A
Cited
US2739828A
Cited
GB734265A
Cited
US2745797A
Cited
US2832613A
Cited
US2823933A
Cited
US2773710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-13 | 1965-05-15 | 1965-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-13 | 1969-05-15 | 1969-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-13 | 1973-05-15 | 1973-11-14 | $7700.00 | Window Closed / Lapsed |