Patent US2928208A successfully refreshed from Google Patents.
US2928208A
Expired / Lapsed
US
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Pneumatic sound maker assembly
Assignee: WINTRISS Inc
•
Filing: 1956-06-26
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Granted: 1960-03-15
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Expires: 1976-06-26
Abstract
No abstract record available.
Inventors
- 👤 Wintriss George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:19
CPC Classifications
A; A63; A63H; A63H5/00; Y; Y10; Y10S; Y10S411/00; Y10S411/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2169181A
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US2615362A
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US2559909A
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US2590743A
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US2745214A
Cited
US2763960A
Cited
US2819558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |