US2939072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetoabsorption method and apparatus for modulation
Assignee: Varian Medical Systems Inc
•
Filing: 1956-05-14
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Granted: 1960-05-31
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Expires: 1976-05-14
Abstract
No abstract record available.
Inventors
- 👤 William E Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:08
CPC Classifications
G; G01; G01G; G01G7/00; G01G7/02; G05; G05D; G05D7/00; G05D7/06; G05D7/0617; G05D7/0629; G05D7/0635; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/7761
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE24267E
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US2448794A
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GB600915A
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US2487523A
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US2417292A
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US2602660A
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US2564777A
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US2631027A
Cited
US2663867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |