US2660106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chimney cowl
Assignee: Individual
•
Filing: 1951-08-03
•
Granted: 1953-11-24
•
Expires: 1971-08-03
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:47
CPC Classifications
F; F23; F23L; F23L17/00; F23L17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US70734A
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US483619A
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US494454A
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US650026A
Cited
US832242A
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US1178050A
Cited
US1068257A
Cited
US1154044A
Cited
US2563710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |