US3497666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam protection device
Assignee: RTX Corp
•
Filing: 1968-04-11
•
Granted: 1970-02-24
•
Expires: 1988-04-11
Abstract
No abstract record available.
Inventors
- 👤 John Alfred Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:44
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/24; B; B23; B23K; B23K15/00; B23K15/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2844706A
Cited
US2882445A
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US2943233A
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US3137791A
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US3351731A
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US3219792A
Cited
US3258576A
Cited
US3370171A
Cited
US3328672A
Cited
US3351804A
Cited
US3395279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |