US2461322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording apparatus
Assignee: Individual
•
Filing: 1945-09-13
•
Granted: 1949-02-08
•
Expires: 1965-09-13
Abstract
No abstract record available.
Inventors
- 👤 Claude M Hathaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:09
CPC Classifications
B; B64; B64D; B64D47/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US418391A
Cited
US1506807A
Cited
US688184A
Cited
US921398A
Cited
US1196335A
Cited
US1444886A
Cited
US1902650A
Cited
US2172511A
Cited
US1979326A
Cited
US2035474A
Cited
US2090531A
Cited
US2384513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-08 | 1952-08-09 | 1953-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-08 | 1956-08-09 | 1957-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-08 | 1960-08-09 | 1961-02-08 | $7700.00 | Window Closed / Lapsed |