Patent US2446186A successfully refreshed from Google Patents.
Patent US1641780A successfully refreshed from Google Patents.
US1641780A
Expired / Lapsed
US
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Extractor
Assignee: KARL TRITSCHELLER
•
Filing: 1925-09-22
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Granted: 1927-09-06
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Expires: 1945-09-22
Abstract
No abstract record available.
Inventors
- 👤 Harry J Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:50
CPC Classifications
D; D06; D06F; D06F49/00; D06F49/06; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2109
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) | 1930-09-05 | 1931-03-07 | 1931-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-09-05 | 1935-03-07 | 1935-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-09-05 | 1939-03-07 | 1939-09-06 | $7700.00 | Window Closed / Lapsed |