Patent US2498882A successfully refreshed from Google Patents.
US2498882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impulse stimulating apparatus
Assignee: Research Corp
•
Filing: 1946-06-20
•
Granted: 1950-02-28
•
Expires: 1966-06-20
Abstract
No abstract record available.
Inventors
- 👤 James A Fizzell
- 👤 James G Golseth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:14
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/36014; A61N1/3603; A61N1/36034; Y; Y10; Y10S; Y10S323/00; Y10S323/911
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB387518A
Cited
US2092496A
Cited
US2185367A
Cited
US2189317A
Cited
US2414479A
Cited
US2428058A
Cited
US2403984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |