Patent US2674435A successfully refreshed from Google Patents.
US2674435A
Expired / Lapsed
US
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Tube compressor
Assignee: SS White Dental Manufacturing Co
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Filing: 1950-03-30
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Granted: 1954-04-06
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Expires: 1970-03-30
Abstract
No abstract record available.
Inventors
- 👤 Robert C Angell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:57
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/045; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6969; Y10T137/698
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1238608A
Cited
US1284465A
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US1876988A
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US2092400A
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US2197995A
Cited
US2355232A
Cited
US2412397A
Cited
US2588212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |