US2820654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder packing means
Assignee: Stewart Bolling and Co Inc
•
Filing: 1954-02-11
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Granted: 1958-01-21
•
Expires: 1974-02-11
Abstract
No abstract record available.
Inventors
- 👤 Bolling Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:17
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/184; F16B; F16B2200/00; F16B2200/69; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE40899C
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US193946A
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US228209A
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US320939A
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US695767A
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FR781262A
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US2046579A
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US2526998A
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US2521692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |