Patent US4791607A successfully refreshed from Google Patents.
US3480104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic tile laminate
Assignee: National Gypsum Co
•
Filing: 1967-06-15
•
Granted: 1969-11-25
•
Expires: 1987-06-15
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Austin
- 👤 Edward R Gorka
- 👤 Norbert W Kaleta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:25
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/04; E04B9/045; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/8409; E04B2001/8457; E04B2001/8461; E04B2001/8476; E04B2001/848; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24322; Y10T428/24331; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249964
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB190606445A
Cited
US2017344A
Cited
US2008718A
Cited
US2851730A
Cited
US3111188A
Cited
US3087575A
Cited
US3283849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |