Patent US3016244A successfully refreshed from Google Patents.
US3016244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniature magnetic sound recording and reproducing device
Assignee: PROTONA PRODUCTIONSGESELLSCHAF
•
Filing: 1955-06-03
•
Granted: 1962-01-09
•
Expires: 1975-06-03
Abstract
No abstract record available.
Inventors
- 👤 Schuh Carl Friedrich
- 👤 Bavaria Lower
- 👤 Hermann Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:58
CPC Classifications
G; G11; G11B; G11B5/00; G11B2005/0002
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2732437A
Cited
US1619005A
Cited
US1560721A
Cited
US2306162A
Cited
US2429703A
Cited
US2484552A
Cited
US2419476A
Cited
US2616982A
Cited
US2676212A
Cited
US2655563A
Cited
US2609457A
Cited
US2713618A
Cited
US2677727A
Cited
US2793039A
Cited
US2802442A
Cited
US2779836A
Cited
US2782263A
Cited
US2726288A
Cited
US2893737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-08 | 1965-07-10 | 1966-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-08 | 1969-07-10 | 1970-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-08 | 1973-07-10 | 1974-01-09 | $7700.00 | Window Closed / Lapsed |