US2620087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weatherproof breather and relief vent for gas regulators
Assignee: Universal Controls Corp
•
Filing: 1949-06-01
•
Granted: 1952-12-02
•
Expires: 1969-06-01
Abstract
No abstract record available.
Inventors
- 👤 Charles D Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:11
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/18; F16K17/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US735007A
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US1622030A
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US1983417A
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US1868730A
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US1921943A
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US2247225A
Cited
US2493861A
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US2494679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |