US2599394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assembly device for resnatron filaments
Assignee: Collins Radio Co
•
Filing: 1949-11-19
•
Granted: 1952-06-03
•
Expires: 1969-11-19
Abstract
No abstract record available.
Inventors
- 👤 Walter H Kohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:17
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB138352A
Cited
US1456506A
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US1541058A
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US1791781A
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US2044818A
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US2327352A
Cited
US2296885A
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US2433339A
Cited
US2445766A
Cited
US2460120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |