US2944107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for wave-band division
Assignee: 3M Co
•
Filing: 1956-04-23
•
Granted: 1960-07-05
•
Expires: 1976-04-23
Abstract
No abstract record available.
Inventors
- 👤 Wayne R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:52
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2534627A
Cited
US2698875A
Cited
US2751437A
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US2794066A
Cited
US2881394A
Cited
US2817701A
Cited
US2762861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |