Patent US2556656A successfully refreshed from Google Patents.
US2556656A
Expired / Lapsed
US
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Electrode type liquid heater and steam generator
Assignee: Individual
•
Filing: 1948-11-08
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Granted: 1951-06-12
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Expires: 1968-11-08
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Lohman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:46
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/10; F24H1/101; F24H1/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1665793A
Cited
US1513250A
Cited
US1597362A
Cited
US1744505A
Cited
US2050607A
Cited
US2185786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |