US2622328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holder and form duplicator for flame cutting hand torches
Assignee: Individual
•
Filing: 1949-03-07
•
Granted: 1952-12-23
•
Expires: 1969-03-07
Abstract
No abstract record available.
Inventors
- 👤 Emil F Krohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:56
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE316822C
Cited
US256462A
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US1324007A
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US1104289A
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US1555992A
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US1617312A
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US1755967A
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US1763793A
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US1829551A
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US1861758A
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US1977710A
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US2038820A
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US2025842A
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US2035544A
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US2284005A
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US2286664A
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US2305909A
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US2363036A
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US2469844A
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US2429686A
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US2524731A
Cited
US2528147A
Cited
US2488898A
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FR66775E
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |