US2102848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum breaking device
Assignee: Sloan Valve Co
•
Filing: 1930-05-08
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Granted: 1937-12-21
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Expires: 1950-05-08
Abstract
No abstract record available.
Inventors
- 👤 Emil J Kocour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:36
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/10; E03C1/108; Y; Y10; Y10T; Y10T137/00; Y10T137/3149; Y10T137/3185; Y10T137/3294; Y10T137/7722; Y10T137/7837; Y10T137/7897; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915
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) | 1940-12-20 | 1941-06-21 | 1941-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-12-20 | 1945-06-21 | 1945-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-12-20 | 1949-06-21 | 1949-12-21 | $7700.00 | Window Closed / Lapsed |