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Patent US3041969A successfully refreshed from Google Patents.
US3041969A
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US
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Gas pressure devices
Assignee: Olin Corp
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Filing: 1959-04-27
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Granted: 1962-07-03
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Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Edward C Filstrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:47
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/04; F42B3/06; E; E21; E21C; E21C37/00; E21C37/06; E21C37/14; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7734
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |