US3526336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessel safety device
Assignee: Black Sivalls and Bryson Inc
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Filing: 1969-01-02
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Granted: 1970-09-01
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Expires: 1989-01-02
Abstract
No abstract record available.
Inventors
- 👤 Loren E Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:12
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/002; F; F16; F16J; F16J13/00; F16J13/24; F16K; F16K17/00; F16K17/02; F16K17/14; F16K17/16; F16K17/1606; F16K17/1613
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) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |