Patent US2895472A successfully refreshed from Google Patents.
US2895472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Respirator
Assignee: Exide Technologies LLC
•
Filing: 1956-01-05
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Granted: 1959-07-21
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Expires: 1976-01-05
Abstract
No abstract record available.
Inventors
- 👤 James N Matheson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:31
CPC Classifications
A; A62; A62B; A62B23/00; A62B23/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US205093A
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US1320935A
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US1395760A
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US1546163A
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US2131730A
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US2308991A
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US2591953A
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US2534720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |