Patent US2677368A successfully refreshed from Google Patents.
US2677368A
Expired / Lapsed
US
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Water heater
Assignee: RC Mahon Co
•
Filing: 1949-06-01
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Granted: 1954-05-04
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Expires: 1969-06-01
Abstract
No abstract record available.
Inventors
- 👤 Louis J Janecek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:46
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/10; F24H1/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US782632A
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US773864A
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US940240A
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US1070052A
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GB191500031A
Cited
US1761812A
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US1762762A
Cited
FR683822A
Cited
GB373801A
Cited
US2026503A
Cited
US2207452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |