US2542428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound-deadening structure
Assignee: Individual
•
Filing: 1944-11-01
•
Granted: 1951-02-20
•
Expires: 1964-11-01
Abstract
No abstract record available.
Inventors
- 👤 Paul G Peik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:04
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04B1/8409; E04B2001/8414; E04B2001/8457; E04B2001/8461; E04B2001/8471
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US906025A
Cited
FR456189A
Cited
US1115266A
Cited
CH68612A
Cited
US1255878A
Cited
US1383344A
Cited
US1494926A
Cited
US1728991A
Cited
US1707255A
Cited
GB300138A
Cited
US1906637A
Cited
US1870101A
Cited
US1950420A
Cited
US1955443A
Cited
CH171632A
Cited
US2114386A
Cited
US2139851A
Cited
US2168949A
Cited
US2323936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |