US2995973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-line spectrometer
Assignee: Barnes Engineering Co
•
Filing: 1959-10-23
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Granted: 1961-08-15
•
Expires: 1979-10-23
Abstract
No abstract record available.
Inventors
- 👤 Barnes Robert Bowling
- 👤 Collyer Philip Wardham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:43
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/02; G01J3/0205; G01J3/0208; G01J3/0229; G01J3/12; G01J3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |