Patent US2179523A successfully refreshed from Google Patents.
US2990885A
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Method and apparatus for producing fire extinguishing foam
Assignee: Akron Brass Co
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Filing: 1958-08-28
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Granted: 1961-07-04
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Expires: 1978-08-28
Abstract
No abstract record available.
Inventors
- 👤 Jack H Brazier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:47
CPC Classifications
A; A62; A62C; A62C5/00; A62C5/02; A62C31/00; A62C31/02; A62C31/12; B; B01; B01F; B01F25/00; B01F25/20; B01F25/25; B01F25/30; B01F25/31; B01F25/311; B01F25/3111; B01F25/312; B01F25/3121; B01F25/3124; B01F25/31243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |