US2485464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pitch drive screw and tuning system
Assignee: RCA Corp
•
Filing: 1943-11-29
•
Granted: 1949-10-18
•
Expires: 1963-11-29
Abstract
No abstract record available.
Inventors
- 👤 Harold B Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:50
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/06; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19721; Y10T74/1987; Y10T74/19893; Y10T74/19898; Y10T74/19902
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US495296A
Cited
US853719A
Cited
US994386A
Cited
US1300047A
Cited
US1948897A
Cited
US2247212A
Cited
US2302732A
Cited
US2275404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |