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US2699759A
Expired / Lapsed
US
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Feed water heating
Assignee: Riley Power Inc
•
Filing: 1951-11-17
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Granted: 1955-01-18
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Expires: 1971-11-17
Abstract
No abstract record available.
Inventors
- 👤 Max H Kuhner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:30
CPC Classifications
F; F22; F22D; F22D1/00; F22D1/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1453703A
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US1612854A
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US2070075A
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Cited
US2623506A
Cited
US2635587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-17 | 1958-07-19 | 1959-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-17 | 1962-07-19 | 1963-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-17 | 1966-07-19 | 1967-01-18 | $7700.00 | Window Closed / Lapsed |