US2840179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound-absorbing panels
Assignee: Individual
•
Filing: 1954-06-17
•
Granted: 1958-06-24
•
Expires: 1974-06-17
Abstract
No abstract record available.
Inventors
- 👤 Miguel C Junger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:03
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/8409; G; G10; G10K; G10K11/00; G10K11/16; G10K11/172; E04B2001/8414; E04B2001/8423; E04B2001/8433; E04B2001/8442; E04B2001/8447; E04B2001/8457; E04B2001/8461; E04B2001/8476; E04B2001/848; E04B2001/8485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |