US3445975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound control partition with resilient support studs
Assignee: United States Gypsum Co
•
Filing: 1966-03-18
•
Granted: 1969-05-27
•
Expires: 1986-03-18
Abstract
No abstract record available.
Inventors
- 👤 Nels Nelsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:12
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/02; E04F13/04; E04F13/045; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7409
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1527618A
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US1935536A
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US1940933A
Cited
US2041773A
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US2921464A
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US3090164A
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US3177620A
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US3350831A
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US3370391A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |