US2666147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrometer
Assignee: Individual
•
Filing: 1946-05-14
•
Granted: 1954-01-12
•
Expires: 1966-05-14
Abstract
No abstract record available.
Inventors
- 👤 Lyle B Borst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:23
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/12; G01J3/18; G01J3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US408511A
Cited
US1457209A
Cited
US1951404A
Cited
US2170435A
Cited
US2261498A
Cited
US2386785A
Cited
US2377862A
Cited
US2394622A
Cited
US2452045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |