US2567280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable condenser
Assignee: Ohmega Laboratories
•
Filing: 1950-07-21
•
Granted: 1951-09-11
•
Expires: 1970-07-21
Abstract
No abstract record available.
Inventors
- 👤 Harry R Foster
- 👤 Elmo E Crump
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:29
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/04; H01G5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1592554A
Cited
FR647016A
Cited
US2219003A
Cited
US2154778A
Cited
GB541712A
Cited
US2326341A
Cited
CH235852A
Cited
US2505287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |