US2561135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanically driven impeller type draft inducer for combustion apparatus
Assignee: Perfection Stove Co
•
Filing: 1946-06-03
•
Granted: 1951-07-17
•
Expires: 1966-06-03
Abstract
No abstract record available.
Inventors
- 👤 Resek Marc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:13
CPC Classifications
F; F23; F23L; F23L17/00; F23L17/005; F23L11/00; F23L11/02; F23M; F23M9/00; F23M9/003; F23M9/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US199396A
Cited
US315522A
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US690789A
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US1181780A
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US1182863A
Cited
US1300335A
Cited
US1869939A
Cited
US1966946A
Cited
US2030825A
Cited
CH216908A
Cited
FR874246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |