US3391423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making abrasive articles
Assignee: RAMRON Inc 4801 COMMERCE PARKWAY WARRENSVILLE HEIGHTS OHIO A CORP OF OHIO
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Filing: 1964-08-07
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Granted: 1968-07-09
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Expires: 1984-08-07
Abstract
No abstract record available.
Inventors
- 👤 Vernon K Charvat
- 👤 Robert E Jarvi
- 👤 Raymond C Srail
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:34
CPC Classifications
B; B29; B29C; B29C39/00; B29C39/02; B29C39/04; B29C39/08; B24; B24D; B24D18/00; B24D18/0009; B24D18/009; B29B; B29B7/00; B29B7/74; B29B7/7476; B29B7/748; B29C31/00; B29C31/04; B29C39/22; B29C39/24; B29L; B29L2031/00; B29L2031/32; B29L2031/322; B29L2031/736
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1944460A
Cited
AT123900B
Cited
US2172798A
Cited
US3129269A
Cited
US3290423A
Cited
US3253068A
Cited
US3217691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |