Patent DE662281C successfully refreshed from Google Patents.
US2475832A
Expired / Lapsed
US
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Suction apparatus actuated by air pressure
Assignee: Individual
•
Filing: 1946-02-25
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Granted: 1949-07-12
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Expires: 1966-02-25
Abstract
No abstract record available.
Inventors
- 👤 William H Gilliland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:06
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/48; F04F5/52; A; A47; A47L; A47L5/00; A47L5/12; A47L5/16; A47L5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1444069A
Cited
US1546420A
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CH177346A
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US2091642A
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US2154773A
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US2164552A
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US2183150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |