US2879501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Null-responsive ratio-modulation multiplex data transmission systems
Assignee: Individual
•
Filing: 1953-04-30
•
Granted: 1959-03-24
•
Expires: 1973-04-30
Abstract
No abstract record available.
Inventors
- 👤 Baran Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:39
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/121; G05D3/124
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1600204A
Cited
US1906269A
Cited
GB400289A
Cited
US2173496A
Cited
US2256482A
Cited
US2409560A
Cited
US2538065A
Cited
FR975183A
Cited
US2555166A
Cited
US2556556A
Cited
US2596147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |