US2584326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stack draft booster and control device for combustion apparatus
Assignee: Coleman Co Inc
•
Filing: 1948-05-04
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Granted: 1952-02-05
•
Expires: 1968-05-04
Abstract
No abstract record available.
Inventors
- 👤 Shirley P Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:41
CPC Classifications
F; F23; F23L; F23L17/00; F23L2700/00; F23L2700/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US532496A
Cited
US880922A
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US1869939A
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US1770588A
Cited
AU1445628A
Cited
US2379916A
Cited
FR874246A
Cited
US2371677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |