US2783295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waveguide seal
Assignee: General Electric Co
•
Filing: 1952-01-18
•
Granted: 1957-02-26
•
Expires: 1972-01-18
Abstract
No abstract record available.
Inventors
- 👤 Lewis M Ewing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:48
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/04; H01P1/042; Y; Y10; Y10S; Y10S277/00; Y10S277/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1648347A
Cited
US1755743A
Cited
US1943739A
Cited
US2087920A
Cited
US2133789A
Cited
US2407076A
Cited
US2469474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |