US3247759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrometer with multiple entrance slits
Assignee: Consolidated Electrodynamics Corp
•
Filing: 1962-03-06
•
Granted: 1966-04-26
•
Expires: 1982-03-06
Abstract
No abstract record available.
Inventors
- 👤 Jason L Saunderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:53
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/30; G01J3/36
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
A SPECTROSCOPIC INSTRUMENT, COMPRISING EXCITATION MEANS FOR GENERATING RADIATION FROM A SAMPLE TO BE ANALYZED, MEANS DEFINING A FOCAL CURVE, A SINGLE DIFFRACTION GRATING FOR DISPERSING THE RADIATION INTO SPECTRAL LINES WHICH ARE FOCUSED ON THE FOCAL CURVE, AND MEANS DEFINING FIRST AND SECOND ENTRANCE SLITS DISPOSED BETWEEN THE EXCITATION MEANS AND THE DIFFRACTION GRATING, THE FIRST AND SECOND ENTRANCE SLITS BEING SPACED APART WHEREBY RADIATION FROM THE EXCITATION MEANS PASSING THROUGH THE SLITS IS INCIDENT UPON THE DIFFRACTION GRATING AT TWO DIFFERENT ANGLES TO PRODUCE TWO BANDS OF SPECTRAL LINES ALONG THE FOCAL CURVE.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |