US2832948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static annunciator
Assignee: Westinghouse Electric Corp
•
Filing: 1956-03-09
•
Granted: 1958-04-29
•
Expires: 1976-03-09
Abstract
No abstract record available.
Inventors
- 👤 Willard A Derr
- 👤 Edward J Cham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:12
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/45; H03K19/00; H03K19/02; H03K19/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |