US1937239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded pipe joint
Assignee: Mcwane Cast Iron Pipe Co
•
Filing: 1931-02-09
•
Granted: 1933-11-28
•
Expires: 1951-02-09
Abstract
No abstract record available.
Inventors
- 👤 James R Mcwane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:29
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/02; F16L51/00; F16L51/02; F16L51/022; F16L51/023; Y; Y10; Y10S; Y10S285/00; Y10S285/915
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) | 1936-11-27 | 1937-05-29 | 1937-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-11-27 | 1941-05-29 | 1941-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-11-27 | 1945-05-29 | 1945-11-28 | $7700.00 | Window Closed / Lapsed |