US2701937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade polishing machine
Assignee: Individual
•
Filing: 1952-04-11
•
Granted: 1955-02-15
•
Expires: 1972-04-11
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:09
CPC Classifications
B; B24; B24B; B24B21/00; B24B21/16; B24B21/165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US237536A
Cited
US479304A
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US1822856A
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US2021371A
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US2145418A
Cited
US2234647A
Cited
US2453972A
Cited
US2334173A
Cited
US2432731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-14 | 1958-08-16 | 1959-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-14 | 1962-08-16 | 1963-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-14 | 1966-08-16 | 1967-02-15 | $7700.00 | Window Closed / Lapsed |