US1669022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dome for tanks
Assignee: Union Tank Car Co
•
Filing: 1926-07-29
•
Granted: 1928-05-08
•
Expires: 1946-07-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph J Root
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:02
CPC Classifications
B; B61; B61D; B61D5/00; B61D5/08; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7036
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) | 1931-05-08 | 1931-11-07 | 1932-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-05-08 | 1935-11-07 | 1936-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-05-08 | 1939-11-07 | 1940-05-08 | $7700.00 | Window Closed / Lapsed |