US3525189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural member and wall assembly including same
Assignee: United States Gypsum Co
•
Filing: 1968-10-11
•
Granted: 1970-08-25
•
Expires: 1988-10-11
Abstract
No abstract record available.
Inventors
- 👤 Nels Nelsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:35
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/36; E04D3/3601; E04D3/3602; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/762; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0803
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1662177A
Cited
US1843430A
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US2582144A
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US2590687A
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US2744589A
Cited
US2836266A
Cited
US3122073A
Cited
US3401494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |