US2523237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torch-guiding tool
Assignee: ALFRED WEISSTEIN
•
Filing: 1947-08-09
•
Granted: 1950-09-19
•
Expires: 1967-08-09
Abstract
No abstract record available.
Inventors
- 👤 Richardson Willie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:36
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/10; B23K7/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317425A
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US1320687A
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US1351846A
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US1553508A
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US1915915A
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US2170305A
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US2202133A
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US2311223A
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US2283347A
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US2403514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |