US2810143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paraffin scraper
Assignee: Phillips Petroleum Co
•
Filing: 1954-06-24
•
Granted: 1957-10-22
•
Expires: 1974-06-24
Abstract
No abstract record available.
Inventors
- 👤 Orvel B Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:32
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055; B08B9/0552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US63695A
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US238005A
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DE594136C
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US646545A
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US1218005A
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US1280443A
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DE547897C
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US2114236A
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US2341435A
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US2640213A
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US2690808A
Cited
US2685685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |