US2884892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic sound producing device
Assignee: NATHAN Manufacturing CORP
•
Filing: 1954-12-01
•
Granted: 1959-05-05
•
Expires: 1974-12-01
Abstract
No abstract record available.
Inventors
- 👤 Robert E Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:25
CPC Classifications
G; G10; G10K; G10K9/00; G10K9/02; G10K9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1698296A
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US1805627A
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NL59483C
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US2263342A
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US2370939A
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US2579784A
Cited
US2658470A
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US2638070A
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US2680422A
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US2645198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |