Patent US2566732A successfully refreshed from Google Patents.
US2566732A
Expired / Lapsed
US
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Multiple stage bleed heater
Assignee: Individual
•
Filing: 1949-04-06
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Granted: 1951-09-04
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Expires: 1969-04-06
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Krieg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:02
CPC Classifications
F; F01; F01K; F01K7/00; F01K7/34; F01K7/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1276860A
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US1804616A
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US1790154A
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US1742580A
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US1760954A
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US1957094A
Cited
US1932485A
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US1989033A
Cited
US2061007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |