US2475160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paraffin remover
Assignee: Individual
•
Filing: 1945-04-12
•
Granted: 1949-07-05
•
Expires: 1965-04-12
Abstract
No abstract record available.
Inventors
- 👤 Harry N Stamos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:25
CPC Classifications
E; E21; E21B; E21B37/00; E21B37/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US809880A
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US754854A
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US813739A
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US921569A
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US1248847A
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US1758995A
Cited
US1989035A
Cited
US1995095A
Cited
US2001270A
Cited
US2326528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |