US2084445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined calculating and typewriting machine
Assignee: Rheinische Metallwaaren and Maschinenfabrik AG
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Filing: 1935-12-09
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Granted: 1937-06-22
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Expires: 1955-12-09
Abstract
No abstract record available.
Inventors
- 👤 Kottmann August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:49
CPC Classifications
G; G06; G06C; G06C11/00; G06C11/08
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) | 1940-06-21 | 1940-12-21 | 1941-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-06-21 | 1944-12-21 | 1945-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-06-21 | 1948-12-21 | 1949-06-22 | $7700.00 | Window Closed / Lapsed |