Patent US2753403A successfully refreshed from Google Patents.
US2753403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective signal system
Assignee: Individual
•
Filing: 1954-11-30
•
Granted: 1956-07-03
•
Expires: 1974-11-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Caracciolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:08
CPC Classifications
H; H04; H04Q; H04Q5/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1756097A
Cited
US1783295A
Cited
US1812641A
Cited
US1942404A
Cited
US2108909A
Cited
US2549688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |