Patent US2498455A successfully refreshed from Google Patents.
US2498455A
Expired / Lapsed
US
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Heater inserting mechanism
Assignee: National Union Radio Corp
•
Filing: 1946-01-10
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Granted: 1950-02-21
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Expires: 1966-01-10
Abstract
No abstract record available.
Inventors
- 👤 Schneider Gerhard Gunther
- 👤 Frank L Donohue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:23
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/42; H01J19/46; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0005; H01J2893/0006; H01J2893/0007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1729843A
Cited
US2423038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |