US2623957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microphone windshield
Assignee: International Standard Electric Corp
•
Filing: 1947-09-27
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Granted: 1952-12-30
•
Expires: 1967-09-27
Abstract
No abstract record available.
Inventors
- 👤 Cragg William Donald
- 👤 Gayford Michael Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:09
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/11; H04R; H04R1/00; H04R1/08; H04R1/083; H04R1/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US588034A
Cited
US1901065A
Cited
GB425186A
Cited
US2200097A
Cited
US2325424A
Cited
US2346394A
Cited
US2433250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |