Patent US1693273A successfully refreshed from Google Patents.
US1693273A
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Pressure regulator
Assignee: HANKISON
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Filing: 1924-04-25
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Granted: 1928-11-27
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Expires: 1944-04-25
Abstract
No abstract record available.
Inventors
- 👤 Lewis E Hankison
- 👤 Wesley M Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:11
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/028; G05D16/04; G05D16/10; G05D16/20; G05D16/2006; G05D16/2013; G05D16/202; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0374; Y10T137/2931; Y10T137/3115; Y10T137/7722; Y10T137/7758; Y10T137/7761; Y10T137/7762; Y10T137/8158; Y10T137/8225; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86767
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) | 1931-11-27 | 1932-05-28 | 1932-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-11-27 | 1936-05-28 | 1936-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-11-27 | 1940-05-28 | 1940-11-27 | $7700.00 | Window Closed / Lapsed |