US3452979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laundry folder
Assignee: GRANTHAM FOLDER Corp A CORP OF CA
•
Filing: 1965-05-21
•
Granted: 1969-07-01
•
Expires: 1985-05-21
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Grantham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:38
CPC Classifications
D; D06; D06F; D06F89/00; Y; Y10; Y10S; Y10S493/00; Y10S493/937
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2072937A
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US2709585A
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US2848219A
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US3104101A
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US3198516A
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US3169763A
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US3171646A
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US3190640A
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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) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |