Patent US1821699A successfully refreshed from Google Patents.
US1821699A
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US
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Low water and pressure governor
Assignee: ROBERT M AKIN
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Filing: 1926-05-25
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Granted: 1931-09-01
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Expires: 1946-05-25
Abstract
No abstract record available.
Inventors
- 👤 Philip H Fleck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:23
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/42; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/742; Y10T137/7439; Y10T137/7465; Y10T137/7468; Y10T74/00; Y10T74/18; Y10T74/18856; Y10T74/18864
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) | 1934-08-31 | 1935-03-02 | 1935-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-31 | 1939-03-02 | 1939-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-31 | 1943-03-02 | 1943-09-01 | $7700.00 | Window Closed / Lapsed |