Patent US3453790A successfully refreshed from Google Patents.
US3453790A
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US
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Portable partitions
Assignee: NEW CASTLE PRODUCTS Inc
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Filing: 1967-07-27
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Granted: 1969-07-08
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Expires: 1987-07-27
Abstract
No abstract record available.
Inventors
- 👤 Donald S Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:09
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/82; E04B2/821; E04B2/827; E04B2002/749; Y; Y10; Y10S; Y10S52/00; Y10S52/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1706469A
Cited
US2078620A
Cited
US2945568A
Cited
US3141206A
Cited
FR1352778A
Cited
US3305983A
Cited
US3335532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |