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US2698744A
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Metering unit for liquid fuel burners
Assignee: HARRY B HOLTHOUSE
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Filing: 1949-04-20
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Granted: 1955-01-04
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Expires: 1969-04-20
Abstract
No abstract record available.
Inventors
- 👤 Sr Harry B Holthouse
- 👤 Jr Harry B Holthouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:38
CPC Classifications
F; F23; F23N; F23N1/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7297
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1733792A
Cited
US1854749A
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US1801446A
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US1774714A
Cited
US1917577A
Cited
US1908432A
Cited
US2230911A
Cited
US2367038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |