US1923653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: CLARENCE E LA BEAU
•
Filing: 1932-02-08
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Granted: 1933-08-22
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Expires: 1952-02-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Ambrose
- 👤 Edwin J Eimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:43
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/40; F21S41/43; F21S41/10; F21S41/12; F21S41/125; F21S41/20; F21S41/285; F21S41/30; F21S41/32; F21S41/321; F21S41/36; F21S41/365
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) | 1936-08-21 | 1937-02-20 | 1937-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-08-21 | 1941-02-20 | 1941-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-08-21 | 1945-02-20 | 1945-08-22 | $7700.00 | Window Closed / Lapsed |