US2459476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Hartford National Bank and Trust Co
•
Filing: 1946-04-26
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Granted: 1949-01-18
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Expires: 1966-04-26
Abstract
No abstract record available.
Inventors
- 👤 Johannes Antonius Maria Liempt
- 👤 Landsbergen Hendricus Johannes
- 👤 Jules Henri Marie Van Uden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:57
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/42; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0005; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49227
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2338701A
Cited
US2256293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |