US2992781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank washing device
Assignee: C E HOWARD CORP
•
Filing: 1958-05-19
•
Granted: 1961-07-18
•
Expires: 1978-05-19
Abstract
No abstract record available.
Inventors
- 👤 Sr Cecil E Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:05
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/02; B05B3/025; B05B3/026; B05B3/04; B05B3/06; B08; B08B; B08B9/00; B08B9/08; B08B9/093; B08B9/0936; Y; Y10; Y10S; Y10S239/00; Y10S239/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1737257A
Cited
GB349184A
Cited
US2013387A
Cited
US2021962A
Cited
US2030194A
Cited
US2602003A
Cited
US2726897A
Cited
US2878062A
Cited
US2766065A
Cited
US2787499A
Cited
US2853342A
Cited
US2858836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |