Patent US2052777A successfully refreshed from Google Patents.
US2052777A
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US
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Sinker reverse plating mechanism
Assignee: Hemphill Co
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Filing: 1929-07-29
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Granted: 1936-09-01
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Expires: 1949-07-29
Abstract
No abstract record available.
Inventors
- 👤 Robert H Lawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:08
CPC Classifications
D; D04; D04B; D04B9/00; D04B9/26; D04B9/28; D04B9/34; D04B1/00; D04B1/10; D04B1/12; D04B15/00; D04B15/32; D04B15/34; D04B15/66; D04B15/68; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T74/2102
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) | 1939-09-01 | 1940-03-02 | 1940-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-09-01 | 1944-03-02 | 1944-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-09-01 | 1948-03-02 | 1948-09-01 | $7700.00 | Window Closed / Lapsed |