Patent US3425452A successfully refreshed from Google Patents.
US3425452A
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Assignee: Carrier Corp
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Filing: 1966-02-01
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Granted: 1969-02-04
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Expires: 1986-02-01
Abstract
No abstract record available.
Inventors
- 👤 David N Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:10
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/08; F16L19/10; F16L19/14; F16L55/00; F16L55/10; F16L55/115; F16L55/1152
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR1228281A
Cited
US1186813A
Cited
GB416503A
Cited
US2226039A
Cited
US2625955A
Cited
US2693374A
Cited
US3079182A
Cited
GB859576A
Cited
US3149861A
Cited
FR1266673A
Cited
US3235292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |