US3522337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for contacting the interior surface of tubular articles
Assignee: Phillips Petroleum Co
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Filing: 1968-04-26
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Granted: 1970-07-28
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Expires: 1988-04-26
Abstract
No abstract record available.
Inventors
- 👤 Lawrence J Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:19
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/90; B29C48/901; B29C48/902; B29C48/03; B29C48/09; B29C48/30; B29C48/32; B29C48/34; B29C48/78; B29C48/86; B29C48/87; B29C48/911; B29C48/9115; B29C48/001; B29C48/0017; B29C48/0018; B29C48/0022; B29K; B29K2995/00; B29K2995/0037; B29K2995/0072
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |