Patent US3527518A successfully refreshed from Google Patents.
US3527518A
Expired / Lapsed
US
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Shoe instep reflector
Assignee: 3M Co
•
Filing: 1968-04-01
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Granted: 1970-09-08
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Expires: 1988-04-01
Abstract
No abstract record available.
Inventors
- 👤 John D Tomlinson
- 👤 Charles V Sevelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:49
CPC Classifications
A; A43; A43B; A43B1/00; A43B1/0072; A43B1/0027; A43B1/0036; G; G08; G08B; G08B5/00; G08B5/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR737776A
Cited
US2567233A
Cited
US2502535A
Cited
US2607130A
Cited
US2581549A
Cited
CH301777A
Cited
US2787975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |