Patent US2897389A successfully refreshed from Google Patents.
US2897389A
Expired / Lapsed
US
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Bulb and bulb spacer for camera tube
Assignee: General Electrodynamics Corp
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Filing: 1956-08-24
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Granted: 1959-07-28
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Expires: 1976-08-24
Abstract
No abstract record available.
Inventors
- 👤 Francis J Salgo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:18
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/34; H01J31/38; H01J19/00; H01J19/42; H01J19/50; H01J19/52; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0005; H01J2893/0009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2640162A
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US2747133A
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US2580250A
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US2710813A
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US2654852A
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US2644906A
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US2809315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |