US2648862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe wiper
Assignee: Individual
•
Filing: 1946-05-27
•
Granted: 1953-08-18
•
Expires: 1966-05-27
Abstract
No abstract record available.
Inventors
- 👤 Byron H Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:19
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1475289A
Cited
US1801995A
Cited
US1823233A
Cited
US2272395A
Cited
US2328127A
Cited
US2392148A
Cited
US2362935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |