Patent US1839708A successfully refreshed from Google Patents.
US1839708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe finishing tool
Assignee: Individual
•
Filing: 1930-12-29
•
Granted: 1932-01-05
•
Expires: 1950-12-29
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Sleight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:19
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/70; B28B21/74; Y; Y10; Y10S; Y10S425/00; Y10S425/218
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-01-04 | 1935-07-06 | 1936-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-01-04 | 1939-07-06 | 1940-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-01-04 | 1943-07-06 | 1944-01-05 | $7700.00 | Window Closed / Lapsed |