US2598963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automobile radiator cleaning device
Assignee: Individual
•
Filing: 1949-08-15
•
Granted: 1952-06-03
•
Expires: 1969-08-15
Abstract
No abstract record available.
Inventors
- 👤 Paul L Armstrong
- 👤 David B Pence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:43
CPC Classifications
C; C23; C23G; C23G3/00; B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/043; B08B9/0433
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US263349A
Cited
US1865289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |