US2550754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating apparatus
Assignee: Individual
•
Filing: 1946-05-14
•
Granted: 1951-05-01
•
Expires: 1966-05-14
Abstract
No abstract record available.
Inventors
- 👤 Augustus L Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:18
CPC Classifications
F; F24; F24F; F24F1/00; F24F1/0007; F24F1/0043; F24F1/005; F24F1/0035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2021583A
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US2112277A
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US1552312A
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US1984933A
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US1989337A
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US1985910A
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GB450340A
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US2107653A
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US2252064A
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US2199840A
Cited
US2277247A
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US2286491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |