Patent US2679412A successfully refreshed from Google Patents.
US2679412A
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Seal
Assignee: Read Standard Corp
•
Filing: 1950-03-24
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Granted: 1954-05-25
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Expires: 1970-03-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Whitfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:18
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/122; F04D29/126; F04D29/128; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38; F05; F05B; F05B2240/00; F05B2240/70; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1859436A
Cited
GB323365A
Cited
US2109679A
Cited
US2362436A
Cited
US2393260A
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US2531079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |