US1850481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coating and drifting mechanism
Assignee: National Tube Co
•
Filing: 1930-06-25
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Granted: 1932-03-22
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Expires: 1950-06-25
Abstract
No abstract record available.
Inventors
- 👤 Telfer Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:56
CPC Classifications
B; B05; B05B; B05B13/00; B05B13/06; B05B13/0627; B05B13/0636; B05B3/00; B05B3/02; B05B3/10; Y; Y10; Y10S; Y10S118/00; Y10S118/10; Y10S118/11
Claims Analysis
Total Claims: 0
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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) | 1935-03-22 | 1935-09-21 | 1936-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-22 | 1939-09-21 | 1940-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-22 | 1943-09-21 | 1944-03-22 | $7700.00 | Window Closed / Lapsed |