US2561481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alarm for deaf persons
Assignee: Individual
•
Filing: 1948-05-14
•
Granted: 1951-07-24
•
Expires: 1968-05-14
Abstract
No abstract record available.
Inventors
- 👤 Rody Pasquale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:39
CPC Classifications
A; A61; A61F; A61F11/00; G; G04; G04B; G04B25/00; G04B25/005; G04C; G04C21/00; G04C21/16; G04C21/20; Y; Y10; Y10S; Y10S5/00; Y10S5/915
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US738801A
Cited
US900293A
Cited
US924127A
Cited
US2117064A
Cited
US2128250A
Cited
US2134028A
Cited
US2320462A
Cited
US2396947A
Cited
US2460133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |