US1899531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: JOSEPHINE C LARSIN
•
Filing: 1931-07-11
•
Granted: 1933-02-28
•
Expires: 1951-07-11
Abstract
No abstract record available.
Inventors
- 👤 Louis P Seifner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:49
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/06; H02G1/08; H02G1/081; Y; Y10; Y10T; Y10T403/00; Y10T403/36; Y10T403/57; Y10T403/5706
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) | 1936-02-28 | 1936-08-29 | 1937-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-02-28 | 1940-08-29 | 1941-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-02-28 | 1944-08-29 | 1945-02-28 | $7700.00 | Window Closed / Lapsed |