US829103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-level alarm for expansion-drums of hot-water heating systems.
Assignee: Safety Car Heating and Lighting Co
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Filing: 1903-11-19
•
Granted: 1906-08-21
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Expires: 1923-11-19
Abstract
No abstract record available.
Inventors
- 👤 Robert M Dixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:45
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/32; G01F23/36
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) | 1909-08-20 | 1910-02-19 | 1910-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-08-20 | 1914-02-19 | 1914-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-08-20 | 1918-02-19 | 1918-08-21 | $7700.00 | Window Closed / Lapsed |