Patent US2881311A successfully refreshed from Google Patents.
US2881311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for producing electrical waves
Assignee: OMEGA LAB
•
Filing: 1955-03-22
•
Granted: 1959-04-07
•
Expires: 1975-03-22
Abstract
No abstract record available.
Inventors
- 👤 Tykulsky Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:27
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/46; H04N; H04N17/00; H04N17/04; H04N17/045
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2166688A
Cited
US2553165A
Cited
US2560576A
Cited
US2591816A
Cited
US2693530A
Cited
CH293272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |