Patent US4755939A successfully refreshed from Google Patents.
US2687147A
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Orifice construction
Assignee: UNITED STATES QUARRY TILE Co
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Filing: 1949-03-29
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Granted: 1954-08-24
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Expires: 1969-03-29
Abstract
No abstract record available.
Inventors
- 👤 Harold R Feichter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:22
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/40; G01F1/42; D; D01; D01D; D01D4/00; D01D4/02; D01D4/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1938475A
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US1580558A
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US1551672A
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US1882241A
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US1671580A
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US2076465A
Cited
US2409661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |