US2878334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure unit
Assignee: Sheffield Corp
•
Filing: 1955-10-28
•
Granted: 1959-03-17
•
Expires: 1975-10-28
Abstract
No abstract record available.
Inventors
- 👤 Aller Willis Fay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:53
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/32; H01H35/26; H01H35/2607
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2401213A
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US2454423A
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US2447895A
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US2448653A
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US2476927A
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US2586992A
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US2567519A
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US2596704A
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US2722580A
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US2648741A
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US2698633A
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US2792569A
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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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |