Patent US2421084A successfully refreshed from Google Patents.
US2201652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage tank
Assignee: Individual
•
Filing: 1937-05-01
•
Granted: 1940-05-21
•
Expires: 1957-05-01
Abstract
No abstract record available.
Inventors
- 👤 William E Joor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:36
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/02; B65D90/08; F; F17; F17B; F17B1/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-05-21 | 1943-11-20 | 1944-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-21 | 1947-11-20 | 1948-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-21 | 1951-11-20 | 1952-05-21 | $7700.00 | Window Closed / Lapsed |