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US2934392A
Expired / Lapsed
US
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Methods of manufacturing evacuated and gas-filled devices
Assignee: General Electric Co
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Filing: 1956-12-28
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Granted: 1960-04-26
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Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 Santis Vincent J De
- 👤 Robert E Manfredi
- 👤 Henry J Nolte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:47
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2277691A
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US2334718A
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US2449838A
Cited
US2692959A
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US2792271A
Cited
US2838708A
Cited
US2882116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |