Patent US2464060A successfully refreshed from Google Patents.
US2464060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming endless belts useful as sound recording media
Assignee: Dictaphone Corp
•
Filing: 1943-11-24
•
Granted: 1949-03-08
•
Expires: 1963-11-24
Abstract
No abstract record available.
Inventors
- 👤 Richard G Rowe
- 👤 George B Bona
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:57
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/08; B; B29; B29L; B29L2017/00; B29L2017/008
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB190100926A
Cited
US1659399A
Cited
US1876229A
Cited
US2085383A
Cited
USRE20080E
Cited
US2019215A
Cited
US2198621A
Cited
US2339840A
Cited
US2320431A
Cited
US2296723A
Cited
US2321732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |