US2448907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe joint
Assignee: WALWORTH PATENTS Inc
•
Filing: 1944-01-25
•
Granted: 1948-09-07
•
Expires: 1964-01-25
Abstract
No abstract record available.
Inventors
- 👤 William R Ost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:07
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/08; Y; Y10; Y10S; Y10S29/00; Y10S29/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US217249A
Cited
US333446A
Cited
US583819A
Cited
US654131A
Cited
US2094495A
Cited
US2050728A
Cited
US2040092A
Cited
US2144332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |