US2936835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making fire extinguishing air foam
Assignee: Sterling Precision Corp
•
Filing: 1954-10-25
•
Granted: 1960-05-17
•
Expires: 1974-10-25
Abstract
No abstract record available.
Inventors
- 👤 Allan G Sheppard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:55
CPC Classifications
A; A62; A62C; A62C5/00; A62C5/002; Y; Y10; Y10S; Y10S261/00; Y10S261/26; Y10S366/00; Y10S366/604
Claims Analysis
Total Claims: 0
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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) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |