US2575816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary scraping device for cleaning surface pitted pipe
Assignee: Individual
•
Filing: 1947-06-02
•
Granted: 1951-11-20
•
Expires: 1967-06-02
Abstract
No abstract record available.
Inventors
- 👤 James C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:55
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/023; Y; Y10; Y10T; Y10T29/00; Y10T29/45; Y10T29/4517; Y10T29/4528
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190201236A
Cited
US909235A
Cited
US1020510A
Cited
US1440042A
Cited
US1901247A
Cited
US1898964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |