Patent US2987121A successfully refreshed from Google Patents.
US2987121A
Expired / Lapsed
US
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Foldable partition
Assignee: Individual
•
Filing: 1959-04-13
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Granted: 1961-06-06
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Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Haws
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:19
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/82; E04B2/827; E06; E06B; E06B3/00; E06B3/32; E06B3/48; E06B3/481; E05; E05D; E05D15/00; E05D15/26; E05D2015/268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2512989A
Cited
US2491261A
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US2496446A
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US2682150A
Cited
US2770297A
Cited
US2865175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |