US2505291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding flux
Assignee: Individual
•
Filing: 1946-05-24
•
Granted: 1950-04-25
•
Expires: 1966-05-24
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Lucas
- 👤 John J Shea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:52
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3606
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
20 words
A WELDING FLUX CONSISTING OF AN INTIMATE DRY MIXTURE OF THE FOLLOWING COMPONENTS IN APPROXIMATELY THE GIVEN PERCENTAGES BY WEIGHT:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-24 | 1953-10-24 | 1954-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-24 | 1957-10-24 | 1958-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-24 | 1961-10-24 | 1962-04-25 | $7700.00 | Window Closed / Lapsed |