US693650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic signal apparatus for liquid-holding tanks.
Assignee: Individual
•
Filing: 1901-07-31
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Granted: 1902-02-18
•
Expires: 1921-07-31
Abstract
No abstract record available.
Inventors
- 👤 John E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:36
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) | 1905-02-17 | 1905-08-19 | 1906-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-02-17 | 1909-08-19 | 1910-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-02-17 | 1913-08-19 | 1914-02-18 | $7700.00 | Window Closed / Lapsed |