US2987891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipeline padder assembly
Assignee: Individual
•
Filing: 1958-04-11
•
Granted: 1961-06-13
•
Expires: 1978-04-11
Abstract
No abstract record available.
Inventors
- 👤 Oscar G Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:33
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/024; F16L1/06; F16L1/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US818214A
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US1910481A
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US2470255A
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US2633713A
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US2755632A
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US2866320A
Cited
US2731738A
Cited
US2777294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |