Patent US4254075A successfully refreshed from Google Patents.
Patent US2431952A successfully refreshed from Google Patents.
US2431952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse generating circuit
Assignee: General Electric Co
•
Filing: 1944-06-07
•
Granted: 1947-12-02
•
Expires: 1964-06-07
Abstract
No abstract record available.
Inventors
- 👤 Donald E Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:48
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/543
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2059219A
Cited
US2074496A
Cited
US2144351A
Cited
GB497147A
Cited
US2149077A
Cited
US2228821A
Cited
US2294388A
Cited
US2309672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-01 | 1951-06-02 | 1951-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-01 | 1955-06-02 | 1955-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-01 | 1959-06-02 | 1959-12-02 | $7700.00 | Window Closed / Lapsed |