Patent US3370390A successfully refreshed from Google Patents.
US3370390A
Expired / Lapsed
US
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Wall casing
Assignee: BRUCE M LIVERMORE
•
Filing: 1965-01-28
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Granted: 1968-02-27
•
Expires: 1985-01-28
Abstract
No abstract record available.
Inventors
- 👤 Bruce M Livermore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:40
CPC Classifications
E; E04; E04F; E04F19/00; E04F19/02; E04F19/04; E04F19/0436
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2151605A
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CA568363A
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US3206806A
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US1055758A
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US1676582A
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US1886320A
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US1950634A
Cited
US2298251A
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US2728957A
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US3047112A
Cited
FR1248986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |