Patent US3351969A successfully refreshed from Google Patents.
US3351969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible scraper
Assignee: Individual
•
Filing: 1965-05-19
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Granted: 1967-11-14
•
Expires: 1985-05-19
Abstract
No abstract record available.
Inventors
- 👤 Vincent C Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:38
CPC Classifications
A; A47; A47L; A47L17/00; A47L17/04; A47L17/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
A SCRAPER BALDE COMPRISING: A GENERALLY FLAT BODY OF RESILIENT MATERIAL HAVING A THIN MARGINAL EDGE PORTION AND A RELATIVELY THICK AREA INWARDLY OF SAID MARGINAL EDGE PORTION, SAID BODY BEING GENERALLY SQUARE IN OUTLINE, THE FOUR CORNERS OF SAID BODY BEING ROUNDED ALONG A RADIUS OF CURVATURE, THE RADIUS FO CURVATURE OF EACH CORNER BEING DIFFERENT FROM THE RADIUD OF CURVATURE OF THE OTHER CORNERS, AND A SERIES OF ANGULARLY SPACED INWARDLY EXTENDING THIN RESILIENT TABS EXTENDING INTO SAID APERTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |