US2174193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifriction pipe guide
Assignee: Individual
•
Filing: 1937-09-25
•
Granted: 1939-09-26
•
Expires: 1957-09-25
Abstract
No abstract record available.
Inventors
- 👤 Alfred O Mickelson
- 👤 Alexander J Duaei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:53
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/16; F16L3/18; B; B65; B65H; B65H57/00; B65H57/14
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) | 1942-09-25 | 1943-03-27 | 1943-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-09-25 | 1947-03-27 | 1947-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-09-25 | 1951-03-27 | 1951-09-26 | $7700.00 | Window Closed / Lapsed |