US2807659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: INTERNAT ELECTRIC RES CORP
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Filing: 1953-03-30
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Granted: 1957-09-24
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Expires: 1973-03-30
Abstract
No abstract record available.
Inventors
- 👤 Woods Leroy Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:09
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/02; H01J5/08; H01J5/12; Y; Y10; Y10S; Y10S220/00; Y10S220/918; Y10S220/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1426861A
Cited
GB350471A
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DE584310C
Cited
US2398626A
Cited
US2512424A
Cited
US2472747A
Cited
US2646460A
Cited
US2745895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |