US2898587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller noise simulator
Assignee: Individual
•
Filing: 1954-10-11
•
Granted: 1959-08-04
•
Expires: 1974-10-11
Abstract
No abstract record available.
Inventors
- 👤 Nye Robert Glen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:11
CPC Classifications
G; G10; G10H; G10H5/00; G09; G09B; G09B9/00; G09B9/56; H; H03; H03B; H03B29/00; H03K; H03K3/00; H03K3/02; H03K3/04; H03K3/05; H03K3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1994902A
Cited
US2354699A
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US2386992A
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US2455472A
Cited
US2483226A
Cited
US2490487A
Cited
US2548684A
Cited
US2445712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |