US3526564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed plastic floormat with perforated envelope
Assignee: WILLIAM A CRAWFORD
•
Filing: 1967-07-19
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Granted: 1970-09-01
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Expires: 1987-07-19
Abstract
No abstract record available.
Inventors
- 👤 William A Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:25
CPC Classifications
B; B32; B32B; B32B27/00; A; A47; A47L; A47L23/00; A47L23/22; A47L23/26; A47L23/266; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/233; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2251372A
Cited
US3016317A
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US2976577A
Cited
US3104195A
Cited
US3246443A
Cited
GB961366A
Cited
US3420022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |