US3432849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound generator
Assignee: Gray Manufacturing Co Inc
•
Filing: 1966-04-29
•
Granted: 1969-03-11
•
Expires: 1986-04-29
Abstract
No abstract record available.
Inventors
- 👤 Leonard E Earling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:56
CPC Classifications
G; G10; G10K; G10K9/00; G10K9/12; G10K9/13; G08; G08B; G08B3/00; G08B3/10; G10K9/18; G10K9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2439665A
Cited
US3179932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |