US2449920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit coupling
Assignee: Diversified Designing & Machin
•
Filing: 1946-03-07
•
Granted: 1948-09-21
•
Expires: 1966-03-07
Abstract
No abstract record available.
Inventors
- 👤 Eugene D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:22
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/48; E; E03; E03C; E03C1/00; E03C1/02; E03C1/04; E03C1/0404; F16L37/08; F16L37/084; F16L37/086
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |