US2642003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blower intake port
Assignee: Read Standard Corp
•
Filing: 1949-12-16
•
Granted: 1953-06-16
•
Expires: 1969-12-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Whitfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:49
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/08; F04C18/082; F04C18/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US514659A
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US1319776A
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US1751703A
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GB437042A
Cited
US2243874A
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US2287716A
Cited
US2410172A
Cited
US2477002A
Cited
US2425000A
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US2474653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |