US3012585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coating with flowable inner layer
Assignee: Royston Laboratories Inc
•
Filing: 1957-06-06
•
Granted: 1961-12-12
•
Expires: 1977-06-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold C O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:23
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/10; F16L58/1054; F16L58/109; F16L58/1063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1763360A
Cited
US1914897A
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US1871125A
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US2047957A
Cited
US2161036A
Cited
US2215523A
Cited
US2438965A
Cited
US2403077A
Cited
US2811190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |