Patent US2774915A successfully refreshed from Google Patents.
US2774915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous counting and storage device
Assignee: Gera Corp
•
Filing: 1954-07-19
•
Granted: 1956-12-18
•
Expires: 1974-07-19
Abstract
No abstract record available.
Inventors
- 👤 Gusman Leo
- 👤 Albert V Bazarlan
- 👤 Marvin N Silver
- 👤 John F Grimm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:05
CPC Classifications
H; H03; H03K; H03K29/00; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J2893/00; H01J2893/007
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2608674A
Cited
US2651741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |