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Patent US1922196A successfully refreshed from Google Patents.
US1922196A
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Assignee: Nordberg Manufacturing Co
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Filing: 1932-03-17
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Granted: 1933-08-15
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Expires: 1952-03-17
Abstract
No abstract record available.
Inventors
- 👤 Robert S Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:11
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/082; F04B43/0009; F04B43/0054; F04B43/0072; F04B43/086
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) | 1936-08-14 | 1937-02-13 | 1937-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-08-14 | 1941-02-13 | 1941-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-08-14 | 1945-02-13 | 1945-08-15 | $7700.00 | Window Closed / Lapsed |