Patent US3370389A successfully refreshed from Google Patents.
US3370389A
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US
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Assignee: ROYALMETAL CORP
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Filing: 1965-03-17
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Granted: 1968-02-27
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Expires: 1985-03-17
Abstract
No abstract record available.
Inventors
- 👤 Macaluso Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:26
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7416; E04B2/7433; E04B2/7435; E04B2/7437; E06; E06B; E06B3/00; E06B3/30; E06B3/301; E06B3/305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2867856A
Cited
US3084483A
Cited
FR1231738A
Cited
US3189140A
Cited
US3147518A
Cited
US3261625A
Cited
US3178775A
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 |