US3097059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming ear plugs for supporting hearing and receivers
Assignee: Individual
•
Filing: 1960-06-23
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Granted: 1963-07-09
•
Expires: 1980-06-23
Abstract
No abstract record available.
Inventors
- 👤 Carl G Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:21
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/65; H04R25/658; H04R25/60; H04R25/604; H04R25/652; H04R25/656
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |