US2954490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal unit mounting
Assignee: AT&T Inc
•
Filing: 1956-05-15
•
Granted: 1960-09-27
•
Expires: 1976-05-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur W Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:41
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/09; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1969339A
Cited
US2167852A
Cited
US2285796A
Cited
US2275122A
Cited
US2484428A
Cited
US2784326A
Cited
US2877370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |