Patent US1680729A successfully refreshed from Google Patents.
US1680729A
Expired / Lapsed
US
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Mechanical movement for pressing machines
Assignee: Prosperity Co Inc
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Filing: 1925-10-16
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Granted: 1928-08-14
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Expires: 1945-10-16
Abstract
No abstract record available.
Inventors
- 👤 Davis Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:38
CPC Classifications
D; D06; D06F; D06F71/00; D06F71/04; D06F71/06; D06F71/062; D06F71/065; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/1816; Y10T74/20; Y10T74/20558
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) | 1931-08-14 | 1932-02-13 | 1932-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-08-14 | 1936-02-13 | 1936-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-08-14 | 1940-02-13 | 1940-08-14 | $7700.00 | Window Closed / Lapsed |