US3417730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sight gauges
Assignee: Rolls Royce PLC
•
Filing: 1967-02-08
•
Granted: 1968-12-24
•
Expires: 1987-02-08
Abstract
No abstract record available.
Inventors
- 👤 Rowan H Colley
- 👤 Frank D Brownhill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:13
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/292; G01F23/02; G01F23/2921; G01F23/2922
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1234924A
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US1380079A
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US1576897A
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US1577209A
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US2071411A
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US2350712A
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US2314761A
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US2633023A
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US2792710A
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US3103816A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |