US2850034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum breaker valve
Assignee: Crane Co
•
Filing: 1953-08-24
•
Granted: 1958-09-02
•
Expires: 1973-08-24
Abstract
No abstract record available.
Inventors
- 👤 Jr John E Svabek
- 👤 Edward G Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:58
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/28; E03C1/294; E03C1/295; E03C1/02; E03C1/10; E03C1/102; E03C1/104; E03C1/108; Y; Y10; Y10T; Y10T137/00; Y10T137/3149; Y10T137/3185; Y10T137/3294; Y10T137/3331
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2133804A
Cited
US2209189A
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US2252164A
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US2325956A
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US2332695A
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US2299706A
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US2655171A
Cited
GB660696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |