Patent US4572206B1 successfully refreshed from Google Patents.
US2646906A
Expired / Lapsed
US
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Caulking cartridge
Assignee: Van Dorn Iron Works Co
•
Filing: 1950-05-17
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Granted: 1953-07-28
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Expires: 1970-05-17
Abstract
No abstract record available.
Inventors
- 👤 Lawrence C Jones
- 👤 Granville H Shirley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:01
CPC Classifications
G; G01; G01F; G01F11/00; G01F11/02; G01F11/021; G01F11/025; G01F11/026; B; B05; B05C; B05C17/00; B05C17/005; B05C17/01
Claims Analysis
Total Claims: 0
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US2070206A
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US2499610A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |