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Patent US3507191A successfully refreshed from Google Patents.
US3507191A
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Effective length of lever arm adjustment in condition responsive mechanism
Assignee: Combustion Engineering Inc
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Filing: 1968-10-08
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Granted: 1970-04-21
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Expires: 1988-10-08
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Shelter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:01
CPC Classifications
F; F15; F15B; F15B21/00; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18248; Y10T74/18256
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2454588A
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US2375748A
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US2394741A
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US2446385A
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US2923153A
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US2816443A
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US3062053A
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US3216326A
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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) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |