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US1163385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damper and draft-regulator for furnaces.
Assignee: NATIONAL RADIATOR Co
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Filing: 1912-08-31
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Granted: 1915-12-07
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Expires: 1932-08-31
Abstract
No abstract record available.
Inventors
- 👤 Samuel B Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:32
CPC Classifications
F; F23; F23N; F23N3/00; F23N3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1918-12-06 | 1919-06-07 | 1919-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-12-06 | 1923-06-07 | 1923-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-12-06 | 1927-06-07 | 1927-12-07 | $7700.00 | Window Closed / Lapsed |