Patent US3336712A successfully refreshed from Google Patents.
US3336712A
Expired / Lapsed
US
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Assignee: Gregory Industries Inc
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Filing: 1964-09-30
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Granted: 1967-08-22
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Expires: 1984-09-30
Abstract
No abstract record available.
Inventors
- 👤 Harold W Bartley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:16
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/02; E04B; E04B1/00; E04B1/16; F; F23; F23M; F23M5/00; F23M5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2883215A
Cited
US3077058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |