Patent US1447422A successfully refreshed from Google Patents.
US1447422A
Expired / Lapsed
US
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Planer
Assignee: LIBERTY MACHINE TOOL CO
•
Filing: 1921-04-20
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Granted: 1923-03-06
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Expires: 1941-04-20
Abstract
No abstract record available.
Inventors
- 👤 Alfred R Mccann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:48
CPC Classifications
B; B23; B23D; B23D1/00; B23D1/02; Y; Y10; Y10T; Y10T409/00; Y10T409/50; Y10T409/508036; Y10T409/5082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-03-05 | 1926-09-04 | 1927-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-03-05 | 1930-09-04 | 1931-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-03-05 | 1934-09-04 | 1935-03-06 | $7700.00 | Window Closed / Lapsed |