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US3497073A
Expired / Lapsed
US
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Dual purpose laundry carrier
Assignee: University of Colorado Boulder
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Filing: 1968-05-01
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Granted: 1970-02-24
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Expires: 1988-05-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas O Bartell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:44
CPC Classifications
D; D06; D06F; D06F95/00; D06F95/002; A; A47; A47B; A47B31/00; A47B2031/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US870835A
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US1167550A
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US1113818A
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US1731341A
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US2484996A
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US2598800A
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US2873033A
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US3149726A
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US3172376A
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US3168271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |