Patent US2534857A successfully refreshed from Google Patents.
US2534857A
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Ratchet mechanism for calking guns
Assignee: Crewe Manufacturing & Tool Co
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Filing: 1949-08-30
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Granted: 1950-12-19
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Expires: 1969-08-30
Abstract
No abstract record available.
Inventors
- 👤 Crewe Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:21
CPC Classifications
G; G01; G01F; G01F11/00; G01F11/02; G01F11/021; G01F11/025; G01F11/026; B; B05; B05C; B05C17/00; B05C17/005; B05C17/01; B05C17/0116; B05C17/012; B05C17/0123; F; F16; F16H; F16H31/00; F16H31/007; F16H31/008; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1558; Y10T74/1587; Y10T74/1598
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2305238A
Cited
US2367346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |