US2067105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank cleaning device
Assignee: Individual
•
Filing: 1936-04-29
•
Granted: 1937-01-05
•
Expires: 1956-04-29
Abstract
No abstract record available.
Inventors
- 👤 Edward F Stevens
- 👤 Featherston H Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:47
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/08; B08B9/093; B08B9/0933; Y; Y10; Y10T; Y10T137/00; Y10T137/6633
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) | 1940-01-05 | 1940-07-06 | 1941-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-01-05 | 1944-07-06 | 1945-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-01-05 | 1948-07-06 | 1949-01-05 | $7700.00 | Window Closed / Lapsed |