US3545565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound attenuating structure
Assignee: Individual
•
Filing: 1969-11-20
•
Granted: 1970-12-08
•
Expires: 1989-11-20
Abstract
No abstract record available.
Inventors
- 👤 Horace Mccaffrey Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:49
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/02; F16L55/033; F16L55/0336; F02; F02B; F02B77/00; F02B77/11; F02B77/13; F16L55/027; F16L55/02709; F16L55/02727; G; G10; G10K; G10K11/00; G10K11/16; G10K11/162; G10K11/168
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |