US2580000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable condenser and drive means therefor
Assignee: Individual
•
Filing: 1945-07-14
•
Granted: 1951-12-25
•
Expires: 1965-07-14
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Batcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:52
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1641314A
Cited
US1695343A
Cited
US1871293A
Cited
US1706148A
Cited
GB437150A
Cited
GB482053A
Cited
US2246750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |