US2349018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape driving system for magnetic sound recording machines and the like
Assignee: HERMAN S HELLER
•
Filing: 1940-10-24
•
Granted: 1944-05-16
•
Expires: 1960-10-24
Abstract
No abstract record available.
Inventors
- 👤 Homer G Tasker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:28
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/43; G11B15/26; G11B15/32; G11B15/70
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-05-16 | 1947-11-15 | 1948-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-05-16 | 1951-11-15 | 1952-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-05-16 | 1955-11-15 | 1956-05-16 | $7700.00 | Window Closed / Lapsed |