Patent US2511338A successfully refreshed from Google Patents.
US2511338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable vacuum condenser
Assignee: Jennings Radio Manufacturing Corp
•
Filing: 1945-05-28
•
Granted: 1950-06-13
•
Expires: 1965-05-28
Abstract
No abstract record available.
Inventors
- 👤 Jennings Jo Emmett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:11
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/04; H01G5/12; H01G5/01; H01G5/014; H01G2005/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US450451A
Cited
US1548122A
Cited
US1694384A
Cited
FR603472A
Cited
US1641687A
Cited
GB350881A
Cited
US2035532A
Cited
US2091855A
Cited
US2192062A
Cited
US2344238A
Cited
US2339663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |