US2419971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Padding and soundproofing material
Assignee: Individual
•
Filing: 1943-06-05
•
Granted: 1947-05-06
•
Expires: 1963-06-05
Abstract
No abstract record available.
Inventors
- 👤 Rumpf Herman
- 👤 Irwin J Rumpf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:13
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/3405; E04C2002/3444; E04C2002/3466; E04C2002/3472; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24744
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1863706A
Cited
US1924472A
Cited
US1988843A
Cited
US2008718A
Cited
US2055446A
Cited
US2077889A
Cited
US2275859A
Cited
GB537386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-05 | 1950-11-04 | 1951-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-05 | 1954-11-04 | 1955-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-05 | 1958-11-04 | 1959-05-06 | $7700.00 | Window Closed / Lapsed |