US2822429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural control track system
Assignee: REPUBLIC PRODUCTIONS Inc
•
Filing: 1954-10-27
•
Granted: 1958-02-04
•
Expires: 1974-10-27
Abstract
No abstract record available.
Inventors
- 👤 Waldon O Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:22
CPC Classifications
G; G11; G11B; G11B7/00; Y; Y10; Y10S; Y10S84/00; Y10S84/26; Y10S84/27
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2101121A
Cited
US2207249A
Cited
US2199559A
Cited
US2270260A
Cited
US2314382A
Cited
US2282927A
Cited
US2499587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |