US2837119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined control diaphragm and safety diaphragm for gas pressure regulator
Assignee: Elster Kromschroeder GmbH
•
Filing: 1954-11-09
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Granted: 1958-06-03
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Expires: 1974-11-09
Abstract
No abstract record available.
Inventors
- 👤 Karl H Schwarz
- 👤 Drabik Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:11
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0638; G05D16/0641; G05D16/0636; G05D16/0644; G05D16/0672; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7809; Y10T137/781
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1703531A
Cited
US1972234A
Cited
DE667694C
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US2278728A
Cited
US2574700A
Cited
US2672891A
Cited
US2650456A
Cited
US2691461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |