US3303514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ear protector
Assignee: Individual
•
Filing: 1965-09-13
•
Granted: 1967-02-14
•
Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Ola V Wessels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:07
CPC Classifications
A; A45; A45D; A45D44/00; A45D44/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US20834A
Cited
US366788A
Cited
GB116127A
Cited
US1772223A
Cited
US2191325A
Cited
US2700162A
Cited
US2634725A
Cited
US2799951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |