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US1821155A
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Assignee: Emhart Industries Inc
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Filing: 1929-03-15
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Granted: 1931-09-01
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Expires: 1949-03-15
Abstract
No abstract record available.
Inventors
- 👤 Hausmann William Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:07
CPC Classifications
E; E05; E05B; E05B57/00; E05C; E05C3/00; E05C3/12; E05C3/124; Y; Y10; Y10S; Y10S70/00; Y10S70/31; Y10T; Y10T292/00; Y10T292/85; Y10T292/858; Y10T292/861; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7915
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) | 1934-08-31 | 1935-03-02 | 1935-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-31 | 1939-03-02 | 1939-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-31 | 1943-03-02 | 1943-09-01 | $7700.00 | Window Closed / Lapsed |