Patent US761953A successfully refreshed from Google Patents.
Patent US3498027A successfully refreshed from Google Patents.
US3498027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stream splitter for gas chromatography
Assignee: Varian Medical Systems Inc
•
Filing: 1967-09-11
•
Granted: 1970-03-03
•
Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Forrest L Buchtel Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:08
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/04; G01N30/06; G01N30/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3128619A
Cited
US3103942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |