US2525570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-extinguishing apparatus and method
Assignee: Cardox Corp
•
Filing: 1945-11-02
•
Granted: 1950-10-10
•
Expires: 1965-11-02
Abstract
No abstract record available.
Inventors
- 👤 Hilding V Williamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:50
CPC Classifications
A; A62; A62C; A62C99/00; A62C99/009; A62C99/0009; A62C99/0018; A62C99/0027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2090163A
Cited
US2121675A
Cited
US2180231A
Cited
US2321445A
Cited
US2352379A
Cited
US2384677A
Cited
US2322449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |