US3056749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray device to eliminate foam
Assignee: Individual
•
Filing: 1957-09-12
•
Granted: 1962-10-02
•
Expires: 1977-09-12
Abstract
No abstract record available.
Inventors
- 👤 Llewellyn B Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:34
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2195415A
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US2359025A
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US2439866A
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US2616858A
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US2646012A
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US2775482A
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US2775485A
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US2830947A
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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) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |