US3407540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip grinding machine
Assignee: JACK E BROWDER
•
Filing: 1965-10-19
•
Granted: 1968-10-29
•
Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Jack E Browder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:59
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/02; B24B41/00; B24B41/06; B24B41/068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US405706A
Cited
US1866212A
Cited
US2021066A
Cited
US2273456A
Cited
US2410955A
Cited
US2740237A
Cited
US3048949A
Cited
US3304662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |