US2433371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating system for welding apparatus
Assignee: Raytheon Co
•
Filing: 1943-07-03
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Granted: 1947-12-30
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Expires: 1963-07-03
Abstract
No abstract record available.
Inventors
- 👤 Klemperer Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:17
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1762712A
Cited
US1938499A
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US1919978A
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US2093982A
Cited
US2088478A
Cited
GB468789A
Cited
US2278516A
Cited
US2370009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-29 | 1951-06-30 | 1951-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-29 | 1955-06-30 | 1955-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-29 | 1959-06-30 | 1959-12-30 | $7700.00 | Window Closed / Lapsed |