US2834952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer
Assignee: Individual
•
Filing: 1953-03-19
•
Granted: 1958-05-13
•
Expires: 1973-03-19
Abstract
No abstract record available.
Inventors
- 👤 Wilbur T Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:18
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; H; H04; H04R; H04R17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1450246A
Cited
US2051200A
Cited
US2452085A
Cited
US2487962A
Cited
US2565159A
Cited
US2638577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |