US2885585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron flow apparatus and method of making same
Assignee: General Electric Co
•
Filing: 1955-12-13
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Granted: 1959-05-05
•
Expires: 1975-12-13
Abstract
No abstract record available.
Inventors
- 👤 Michael J Zunick
- 👤 Reimann L Stroble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:08
CPC Classifications
H; H01; H01J; H01J33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1907507A
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US1941157A
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US2018599A
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US2617953A
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US2758245A
Cited
US2722620A
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US2820168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |