US2418228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic microanalyzer
Assignee: RCA Corp
•
Filing: 1943-10-08
•
Granted: 1947-04-01
•
Expires: 1963-10-08
Abstract
No abstract record available.
Inventors
- 👤 Hillier James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:52
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/252
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2131536A
Cited
US2126286A
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US2257774A
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US2249453A
Cited
US2233286A
Cited
US2260041A
Cited
US2356633A
Cited
US2281325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-31 | 1950-09-30 | 1951-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-31 | 1954-09-30 | 1955-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-31 | 1958-09-30 | 1959-04-01 | $7700.00 | Window Closed / Lapsed |