US2544740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio pulse communication system
Assignee: Individual
•
Filing: 1938-10-27
•
Granted: 1951-03-13
•
Expires: 1958-10-27
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Varcla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:00
CPC Classifications
H; H03; H03D; H03D11/00; H03D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1455767A
Cited
US1243789A
Cited
US1455768A
Cited
US1489158A
Cited
US1902234A
Cited
US2010253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |