US2033955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum breaking device
Assignee: Individual
•
Filing: 1934-07-30
•
Granted: 1936-03-17
•
Expires: 1954-07-30
Abstract
No abstract record available.
Inventors
- 👤 Robinovitz Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:54
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; Y10T137/7838; Y10T137/7843; Y10T137/794
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) | 1939-03-17 | 1939-09-16 | 1940-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-03-17 | 1943-09-16 | 1944-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-03-17 | 1947-09-16 | 1948-03-17 | $7700.00 | Window Closed / Lapsed |