US2788665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twist tube pressure gauge
Assignee: Individual
•
Filing: 1951-06-25
•
Granted: 1957-04-16
•
Expires: 1971-06-25
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Wiancko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:10
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0026; G01L9/0029
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US48331A
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US395279A
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US1943850A
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US1983305A
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US2614425A
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US2509644A
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US2593339A
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US2441468A
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US2563899A
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US2531414A
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US2631272A
Cited
US2751576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |