US2634393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion system
Assignee: Individual
•
Filing: 1944-08-14
•
Granted: 1953-04-07
•
Expires: 1964-08-14
Abstract
No abstract record available.
Inventors
- 👤 William I L Wu
- 👤 Victor V Vacquier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:22
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US972892A
Cited
GB190905413A
Cited
US1665397A
Cited
US2066333A
Cited
US2049306A
Cited
US2320175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |