US2842902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-rigid rotative abrasive structures
Assignee: 3M Co
•
Filing: 1958-01-24
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Granted: 1958-07-15
•
Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 Theodore J Miller
- 👤 Earl L Gothier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:20
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/02; B24D13/04; B24D13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US449239A
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US2164800A
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US2521911A
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US2444093A
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US2524626A
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US2642705A
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US2651894A
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US2678523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |