Patent US2292003A successfully refreshed from Google Patents.
US2292003A
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Assignee: MSA Safety Inc
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Filing: 1939-10-12
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Granted: 1942-08-04
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Expires: 1959-10-12
Abstract
No abstract record available.
Inventors
- 👤 William P Yant
- 👤 John F Dauster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:47
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/1402; F16K15/148; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784
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) | 1945-08-03 | 1946-02-02 | 1946-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-08-03 | 1950-02-02 | 1950-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-08-03 | 1954-02-02 | 1954-08-04 | $7700.00 | Window Closed / Lapsed |