Patent US2819764A successfully refreshed from Google Patents.
US2819764A
Expired / Lapsed
US
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Fire extinguishing apparatus
Assignee: Specialties Development Corp
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Filing: 1956-04-05
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Granted: 1958-01-14
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Expires: 1976-04-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:32
CPC Classifications
A; A62; A62C; A62C13/00; A62C13/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1815494A
Cited
US2430470A
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US2541554A
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US2580448A
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US2620038A
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US2764246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |