US2451882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid proportioning gauge or indicator
Assignee: Individual
•
Filing: 1945-08-17
•
Granted: 1948-10-19
•
Expires: 1965-08-17
Abstract
No abstract record available.
Inventors
- 👤 Walter C J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:37
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1426955A
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US1440832A
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US1705669A
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US1856662A
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US2231781A
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US2180811A
Cited
US2338986A
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US2371457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |