Patent US3405927A successfully refreshed from Google Patents.
US3405927A
Expired / Lapsed
US
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Spring adjusting device for use in a pressure regulator
Assignee: Elster Kromschroeder GmbH
•
Filing: 1965-06-03
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Granted: 1968-10-15
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Expires: 1985-06-03
Abstract
No abstract record available.
Inventors
- 👤 Drabik Josef
- 👤 Klare Manfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:21
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/365; G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0636; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7825
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1712697A
Cited
US1658951A
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CH161145A
Cited
US2304404A
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US2342001A
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DE911567C
Cited
FR1060713A
Cited
US2891784A
Cited
US3032054A
Cited
US3111962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |