US1439370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-bur filer
Assignee: Individual
•
Filing: 1920-09-28
•
Granted: 1922-12-19
•
Expires: 1940-09-28
Abstract
No abstract record available.
Inventors
- 👤 Louis A Lambert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:29
CPC Classifications
B; B23; B23D; B23D79/00; Y; Y10; Y10S; Y10S29/00; Y10S29/097; Y10T; Y10T29/00; Y10T29/45; Y10T29/4561; Y10T409/00; Y10T409/50; Y10T409/501476; Y10T409/50164
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) | 1925-12-18 | 1926-06-19 | 1926-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-12-18 | 1930-06-19 | 1930-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-12-18 | 1934-06-19 | 1934-12-19 | $7700.00 | Window Closed / Lapsed |