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Patent US2557419A successfully refreshed from Google Patents.
US2557419A
Expired / Lapsed
US
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Smoke and gas consumer
Assignee: Individual
•
Filing: 1949-11-02
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Granted: 1951-06-19
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Expires: 1969-11-02
Abstract
No abstract record available.
Inventors
- 👤 Daniel G Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:46
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/02; F23J15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US217294A
Cited
US797661A
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GB190526356A
Cited
US879219A
Cited
US957849A
Cited
US1740594A
Cited
US1814582A
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US2040700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |