US2772355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide range tuner
Assignee: Polytechnic Res & Dev Co Inc
•
Filing: 1951-07-05
•
Granted: 1956-11-27
•
Expires: 1971-07-05
Abstract
No abstract record available.
Inventors
- 👤 Deutsch Sid
- 👤 Herbert A Finke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:28
CPC Classifications
H; H03; H03H; H03H5/00; H03H5/003
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |