Patent US2443733A successfully refreshed from Google Patents.
US2443733A
Expired / Lapsed
US
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Magnetic hone and lap
Assignee: Individual
•
Filing: 1946-04-08
•
Granted: 1948-06-22
•
Expires: 1966-04-08
Abstract
No abstract record available.
Inventors
- 👤 Maxwell R Karge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:00
CPC Classifications
B; B24; B24D; B24D15/00; B24D15/06; Y; Y10; Y10S; Y10S211/00; Y10S211/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307658A
Cited
US786141A
Cited
US1147102A
Cited
US1393297A
Cited
US1664950A
Cited
US1962120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-22 | 1951-12-22 | 1952-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-22 | 1955-12-22 | 1956-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-22 | 1959-12-22 | 1960-06-22 | $7700.00 | Window Closed / Lapsed |