US2437323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for instantaneously indicating on an oscilloscope screen the absorption spectrum of a substance
Assignee: Standard Oil Development Co
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Filing: 1944-05-26
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Granted: 1948-03-09
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Expires: 1964-05-26
Abstract
No abstract record available.
Inventors
- 👤 John J Heigl
- 👤 James A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:38
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/42; Y; Y10; Y10S; Y10S73/00; Y10S73/11
Claims Analysis
Total Claims: 0
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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) | 1951-03-09 | 1951-09-08 | 1952-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-09 | 1955-09-08 | 1956-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-09 | 1959-09-08 | 1960-03-09 | $7700.00 | Window Closed / Lapsed |