US2706013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silencing means
Assignee: AV Roe Canada Ltd
•
Filing: 1951-08-30
•
Granted: 1955-04-12
•
Expires: 1971-08-30
Abstract
No abstract record available.
Inventors
- 👤 Wigle Lloyd Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:40
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE536848C
Cited
US1658402A
Cited
GB249518A
Cited
CH119301A
Cited
US1794276A
Cited
FR720368A
Cited
FR817517A
Cited
US2150530A
Cited
US2270825A
Cited
US2450212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-11 | 1958-10-11 | 1959-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-11 | 1962-10-11 | 1963-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-11 | 1966-10-11 | 1967-04-12 | $7700.00 | Window Closed / Lapsed |