Patent US2143603A successfully refreshed from Google Patents.
Patent US2674472A successfully refreshed from Google Patents.
US2674472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint
Assignee: Leer S Curacao N V Van
•
Filing: 1950-02-13
•
Granted: 1954-04-06
•
Expires: 1970-02-13
Abstract
No abstract record available.
Inventors
- 👤 Cornelis A Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:50
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/02; F16L21/025; B; B65; B65D; B65D39/00; B65D39/0005; B65D39/0023; B65D43/00; B65D43/02; B65D43/0202; B65D43/0214; B65D43/0222; B65D2539/00; B65D2539/001; B65D2539/006; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/00074; B65D2543/00092; B65D2543/00259; B65D2543/00277; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00527; B65D2543/00537; B65D2543/00583; B65D2543/00953; B65D2543/00962; B65D2543/00972
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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |