US2704864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound-absorbing wall treatment
Assignee: Johns Manville Corp
•
Filing: 1949-01-12
•
Granted: 1955-03-29
•
Expires: 1969-01-12
Abstract
No abstract record available.
Inventors
- 👤 William S Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:06
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/34
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1462208A
Cited
US1666311A
Cited
US1984190A
Cited
US1986953A
Cited
US2028453A
Cited
US2160638A
Cited
US2227570A
Cited
US2230349A
Cited
US2390262A
Cited
US2423199A
Cited
US2447272A
Cited
US2434108A
Cited
US2519161A
Cited
US2448413A
Cited
US2475708A
Cited
US2527031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |