Patent US2086711A successfully refreshed from Google Patents.
US2086711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing fire extinguishing foam
Assignee: Individual
•
Filing: 1935-05-27
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Granted: 1937-07-13
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Expires: 1955-05-27
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:37
CPC Classifications
A; A62; A62C; A62C5/00; A62C5/02; A62C31/00; A62C31/02; A62C31/12; B; B01; B01F; B01F25/00; B01F25/30; B01F25/31; B01F25/311; B01F25/3111
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-07-12 | 1941-01-11 | 1941-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-12 | 1945-01-11 | 1945-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-12 | 1949-01-11 | 1949-07-13 | $7700.00 | Window Closed / Lapsed |