US2916646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas discharge tube
Assignee: Beckman Coulter Inc
•
Filing: 1956-06-26
•
Granted: 1959-12-08
•
Expires: 1976-06-26
Abstract
No abstract record available.
Inventors
- 👤 David A Rohrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:29
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/70; H01J61/02; H01J61/025; H01J61/04; H01J61/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2228327A
Cited
US1858698A
Cited
US1951137A
Cited
US1954420A
Cited
US2030435A
Cited
US2030450A
Cited
US2165987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |