US2940468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm-controlled gas pressure regulator
Assignee: Elster Kromschroeder GmbH
•
Filing: 1956-03-05
•
Granted: 1960-06-14
•
Expires: 1976-03-05
Abstract
No abstract record available.
Inventors
- 👤 Drabik Josef
- 👤 Karl H Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:27
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0672; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7723; Y10T137/7728; Y10T137/7754; Y10T137/7755; Y10T137/7781; Y10T137/7793; Y10T137/7795; Y10T137/7808; Y10T137/7822; Y10T137/7823; Y10T137/7825
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733729A
Cited
DE503127C
Cited
US1912383A
Cited
US2057150A
Cited
US2515252A
Cited
US2693823A
Cited
FR1111473A
Cited
US2752930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |