US2982953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stage
Assignee: —
•
Filing: —
•
Granted: 1961-05-02
•
Expires: 1978-05-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:21
CPC Classifications
H; H03; H03M; H03M7/00; H03M7/14; H03M7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2557729A
Cited
US2571680A
Cited
US2636133A
Cited
US2632845A
Cited
US2781447A
Cited
US2762564A
Cited
US2758788A
Cited
US2755459A
Cited
US2810518A
Cited
US2811713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |