US2429581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning rod for welding torches
Assignee: Individual
•
Filing: 1944-07-03
•
Granted: 1947-10-21
•
Expires: 1964-07-03
Abstract
No abstract record available.
Inventors
- 👤 Harry D Maitlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:42
CPC Classifications
B; B23; B23K; B23K5/00; B23K5/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US667060A
Cited
US690393A
Cited
US865726A
Cited
US1132396A
Cited
US1516438A
Cited
US1525933A
Cited
US2318696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-20 | 1951-04-21 | 1951-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-20 | 1955-04-21 | 1955-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-20 | 1959-04-21 | 1959-10-21 | $7700.00 | Window Closed / Lapsed |