US2714677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensated ion chamber
Assignee: Individual
•
Filing: 1950-03-31
•
Granted: 1955-08-02
•
Expires: 1970-03-31
Abstract
No abstract record available.
Inventors
- 👤 Stephen M Macneille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:32
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/12; H01J47/1205; H01J47/1211; H01J47/1216
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2440167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-01 | 1959-01-31 | 1959-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-01 | 1963-01-31 | 1963-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-01 | 1967-01-31 | 1967-08-02 | $7700.00 | Window Closed / Lapsed |