Patent US2198724A successfully refreshed from Google Patents.
US2198724A
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US
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Assignee: Individual
•
Filing: 1937-12-23
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Granted: 1940-04-30
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Expires: 1957-12-23
Abstract
No abstract record available.
Inventors
- 👤 Norval P Schreiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:12
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/04; A47C27/05; A47C27/053; A47C27/22; B; B68; B68G; B68G11/00; B68G11/02; B68G11/03; B68G5/00; B68G5/02; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12361; Y10T428/12451; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/249921; Y10T428/249953; Y10T428/24996
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) | 1943-04-30 | 1943-10-30 | 1944-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-30 | 1947-10-30 | 1948-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-30 | 1951-10-30 | 1952-04-30 | $7700.00 | Window Closed / Lapsed |