US2680989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording spectrometer
Assignee: Applied Biosystems Inc
•
Filing: 1950-12-22
•
Granted: 1954-06-15
•
Expires: 1970-12-22
Abstract
No abstract record available.
Inventors
- 👤 Savitzky Abraham
- 👤 Ralph S Halford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:18
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1999023A
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US2287808A
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US2395489A
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US2359734A
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GB584506A
Cited
US2442910A
Cited
US2439373A
Cited
US2503165A
Cited
US2483746A
Cited
US2547212A
Cited
US2549402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |