US2463652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum tube measuring instrument
Assignee: Hartford National Bank and Trust Co
•
Filing: 1944-09-18
•
Granted: 1949-03-08
•
Expires: 1964-09-18
Abstract
No abstract record available.
Inventors
- 👤 Storm Andre Willem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:20
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/10; G01R17/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1755244A
Cited
US2067489A
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GB526869A
Cited
US2208254A
Cited
US2273987A
Cited
US2311807A
Cited
US2270243A
Cited
US2316044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |