US3515274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor screens
Assignee: Individual
•
Filing: 1967-07-26
•
Granted: 1970-06-02
•
Expires: 1987-07-26
Abstract
No abstract record available.
Inventors
- 👤 Albert Wehner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:51
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/50; B07B1/52; B07B1/526; B07B1/28; B07B1/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US265087A
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US348128A
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US784584A
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US2577294A
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US2649599A
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US2647271A
Cited
US3029452A
Cited
US3254767A
Cited
US3077624A
Cited
US3115653A
Cited
US3261469A
Cited
US3233266A
Cited
US3379309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |