US3047089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ear plugs
Assignee: Syracuse University
•
Filing: 1959-08-31
•
Granted: 1962-07-31
•
Expires: 1979-08-31
Abstract
No abstract record available.
Inventors
- 👤 Jozef J Zwislocki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:27
CPC Classifications
A; A61; A61F; A61F11/00; A61F11/06; A61F11/08; H; H04; H04R; H04R25/00; H04R25/65; H04R25/652
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2487038A
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DE843883C
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US2801423A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |