Patent US2837640A successfully refreshed from Google Patents.
US2837640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse height analyzer
Assignee: Individual
•
Filing: 1953-09-03
•
Granted: 1958-06-03
•
Expires: 1973-09-03
Abstract
No abstract record available.
Inventors
- 👤 William W Goldsworthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:59
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/54; H03K21/00; H03K3/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2538027A
Cited
US2568319A
Cited
US2482544A
Cited
US2564692A
Cited
US2536032A
Cited
US2552013A
Cited
US2514162A
Cited
US2591247A
Cited
US2529666A
Cited
US2558100A
Cited
US2760064A
Cited
US2715181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |