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Patent US1855682A successfully refreshed from Google Patents.
US1855682A
Expired / Lapsed
US
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Alarm device for fluid pressure regulators
Assignee: Pittsburgh Equitable Meter Co
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Filing: 1931-02-19
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Granted: 1932-04-26
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Expires: 1951-02-19
Abstract
No abstract record available.
Inventors
- 👤 Allen D Maclean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:52
CPC Classifications
F; F17; F17D; F17D5/00; F17D5/005
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) | 1935-04-26 | 1935-10-26 | 1936-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-26 | 1939-10-26 | 1940-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-26 | 1943-10-26 | 1944-04-26 | $7700.00 | Window Closed / Lapsed |