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US972171A
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Assignee: Individual
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Filing: 1909-12-07
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Granted: 1910-10-11
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Expires: 1929-12-07
Abstract
No abstract record available.
Inventors
- 👤 Louis H Dupont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:37
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/06; E05B67/22; E05B67/24; E05B37/00; E05B37/0031; E05B37/0034; E05B37/02; E05B37/025; Y; Y10; Y10S; Y10S70/00; Y10S70/71; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/415; Y10T70/417; Y10T70/422; Y10T70/424; Y10T70/70; Y10T70/7147; Y10T70/7153; Y10T70/7181; Y10T70/7198; Y10T70/7237; Y10T70/726; Y10T70/7305
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) | 1913-10-10 | 1914-04-11 | 1914-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-10-10 | 1918-04-11 | 1918-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-10-10 | 1922-04-11 | 1922-10-11 | $7700.00 | Window Closed / Lapsed |