US2456744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal pipe coupling
Assignee: PACIFIC COAST ENG CO
•
Filing: 1947-01-11
•
Granted: 1948-12-21
•
Expires: 1967-01-11
Abstract
No abstract record available.
Inventors
- 👤 John G Sjoberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:03
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/12; F16L37/1205; F16L37/50; F16L37/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1946110A
Cited
US2134314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |