US2805568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic gauging device
Assignee: Sheffield Corp
•
Filing: 1954-04-23
•
Granted: 1957-09-10
•
Expires: 1974-04-23
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:41
CPC Classifications
G; G01; G01B; G01B13/00; G01B13/08; G01B13/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2166705A
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US2299884A
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US2478391A
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US2589251A
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US2669246A
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US2686424A
Cited
US2665579A
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US2706397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |