US2280631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Facing sheet for sound absorbing material
Assignee: Burgess Battery Co
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Filing: 1939-05-15
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Granted: 1942-04-21
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Expires: 1959-05-15
Abstract
No abstract record available.
Inventors
- 👤 Cyril L Coffey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:25
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/8409; A; A01; A01B; A01B15/00; A01B15/02; E04B2001/8414; E04B2001/8423; E04B2001/8433; E04B2001/8442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-04-20 | 1945-10-20 | 1946-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-04-20 | 1949-10-20 | 1950-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-04-20 | 1953-10-20 | 1954-04-21 | $7700.00 | Window Closed / Lapsed |