US2754458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable tubular condenser
Assignee: Individual
•
Filing: 1954-02-02
•
Granted: 1956-07-10
•
Expires: 1974-02-02
Abstract
No abstract record available.
Inventors
- 👤 Charles L Shull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:09
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/04; H01G5/14; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18752
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB263948A
Cited
US2109880A
Cited
GB540279A
Cited
US2338271A
Cited
GB600033A
Cited
US2578608A
Cited
US2607826A
Cited
US2654634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |