US3403257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light beam demodulator
Assignee: McDonnell Douglas Corp
•
Filing: 1963-04-02
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Granted: 1968-09-24
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Expires: 1983-04-02
Abstract
No abstract record available.
Inventors
- 👤 Michael D Petroff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:15
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/60; G; G02; G02F; G02F2/00; H01; H01J; H01J23/00; H01J23/02; H01J23/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
AN ARRANGEMENT FOR CONVERTING MODULATED COHERENT LIGHT ENERGY TO MICROWAVE RADIATION COMPRISING A MICROWAVE INTERACTING STRUCTURE, AN ELECTRON BEAM SOURCE, MEANS FOR APPLYING A MODULATED COHERENT LIGHT BEAM THROUGH THE INTERACTING STRUCTURE TO CONTROL THE ELECTRON BEAM SOURCE, AND MEANS FOR COUPLING THE RESULTANT ELEC-
Claim 2
Dependent Claim
45 words
AN ARRANGEMENT FOR CONVERTING MODULATED COHERENT LIGHT ENERGY TO MICROWAVE RADIATION COMPRISING A MICROWAVE INTERACTING STRUCTURE, AN ELECTRON BEAM SOURCE, MEANS FOR APPLYING A MODULATED COHERENT LIGHT BEAM THROUGH THE INTERACTING STRUCTURE TO CONTROL THE ELECTRON BEAM SOURCE, AND MEANS FOR COUPLING THE RESULTANT ELEC-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |