US1893200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure responsive device and diaphragm for use therein
Assignee: BUILDERS IRON FOUNDRY
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Filing: 1929-11-23
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Granted: 1933-01-03
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Expires: 1949-11-23
Abstract
No abstract record available.
Inventors
- 👤 Harry S Dolbey
- 👤 Jr Ed S Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:52
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/38; G01F1/386; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8342
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) | 1936-01-03 | 1936-07-04 | 1937-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-01-03 | 1940-07-04 | 1941-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-01-03 | 1944-07-04 | 1945-01-03 | $7700.00 | Window Closed / Lapsed |