US2698381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave guide accelerator system
Assignee: Individual
•
Filing: 1949-10-11
•
Granted: 1954-12-28
•
Expires: 1969-10-11
Abstract
No abstract record available.
Inventors
- 👤 Robertson-Shersby-Ha Rob Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:18
CPC Classifications
H; H05; H05H; H05H9/00; H05H9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2284751A
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US2436828A
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US2653270A
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GB628570A
Cited
US2580007A
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US2545595A
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US2641731A
Cited
US2667597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |