US2513985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ear cushion with earplug
Assignee: Automatic Electric Laboratories Inc
•
Filing: 1947-12-26
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Granted: 1950-07-04
•
Expires: 1967-12-26
Abstract
No abstract record available.
Inventors
- 👤 Albert E Woodruff
- 👤 Theodore C Riebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:47
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/10; H04R1/1008; H04R1/1016; H04R1/1058
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1249962A
Cited
US1489978A
Cited
US1584662A
Cited
US1624144A
Cited
US1623552A
Cited
US2235372A
Cited
US2353070A
Cited
US2430229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |