Patent US3461844A successfully refreshed from Google Patents.
US3461844A
Expired / Lapsed
US
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Laminate animal stall flooring
Assignee: 3M Co
•
Filing: 1967-07-20
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Granted: 1969-08-19
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Expires: 1987-07-20
Abstract
No abstract record available.
Inventors
- 👤 George C Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:17
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/015; A01K1/0157; E; E04; E04F; E04F15/00; E04F15/12; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249968; Y10T428/249978; Y10T428/249979
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2665664A
Cited
US2720861A
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US2956281A
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US2878153A
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US2806812A
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US3271222A
Cited
US3148663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |