Patent US2418580A successfully refreshed from Google Patents.
US2418580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing tile lined tanks
Assignee: Individual
•
Filing: 1942-10-20
•
Granted: 1947-04-08
•
Expires: 1962-10-20
Abstract
No abstract record available.
Inventors
- 👤 John M Crom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:50
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/70; B65D85/84
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US903909A
Cited
US1102584A
Cited
US1281404A
Cited
US2054679A
Cited
US2185749A
Cited
US2136390A
Cited
US2178535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-07 | 1950-10-07 | 1951-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-07 | 1954-10-07 | 1955-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-07 | 1958-10-07 | 1959-04-08 | $7700.00 | Window Closed / Lapsed |