US2441055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling
Assignee: ROLAND B SEFERIAN
•
Filing: 1944-08-23
•
Granted: 1948-05-04
•
Expires: 1964-08-23
Abstract
No abstract record available.
Inventors
- 👤 George H Babigian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:41
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/002; F16L21/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US91291A
Cited
US319144A
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US487434A
Cited
US1412469A
Cited
GB330123A
Cited
US1837294A
Cited
US2152962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |