US2528771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sectional casing for fluid heaters
Assignee: EMIL L MUSTEE
•
Filing: 1944-06-14
•
Granted: 1950-11-07
•
Expires: 1964-06-14
Abstract
No abstract record available.
Inventors
- 👤 Bernard E Mustee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/22; F24H1/40; F24H1/43; F24H9/00; F24H9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1859743A
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US2028253A
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US2243249A
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US2139618A
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US2185026A
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US2253799A
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US2245332A
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US2324710A
Cited
US2371347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |