US3468642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating a flap-type wheel
Assignee: Merit Products Inc
•
Filing: 1966-08-04
•
Granted: 1969-09-23
•
Expires: 1986-08-04
Abstract
No abstract record available.
Inventors
- 👤 Russell W Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:55
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/02; B24D13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2796337A
Cited
US2991165A
Cited
US3294502A
Cited
US3116575A
Cited
US3220810A
Cited
US3241267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |