Patent US2604313A successfully refreshed from Google Patents.
US2604313A
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Assignee: ROSCO MACHINERY Co Inc
•
Filing: 1949-08-01
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Granted: 1952-07-22
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Expires: 1969-08-01
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Grantham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:23
CPC Classifications
F; F26; F26B; F26B11/00; F26B11/18; F26B11/181; F26B11/182; F26B23/00; F26B23/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US952775A
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US1301324A
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US1607841A
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US1638812A
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US2232501A
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US2227291A
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US2397091A
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US2498172A
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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) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |