US2804508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape reproducer
Assignee: ERNST MASTLING
•
Filing: 1955-07-26
•
Granted: 1957-08-27
•
Expires: 1975-07-26
Abstract
No abstract record available.
Inventors
- 👤 Mastling Richard
- 👤 Schimmelbusch Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:47
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/02; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1665784A
Cited
US2609457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |