US2978076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Long length lath partition system
Assignee: National Gypsum Co
•
Filing: 1958-01-29
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Granted: 1961-04-04
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Expires: 1978-01-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Schneller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:54
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/76; E04B2/78; E04B2/7407; E04B2/7453; E04B2/7457; E04B2/72; E04B2/723; E04B2002/726
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US540693A
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US1911018A
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US2017911A
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US1985150A
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US2830683A
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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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |