Patent US3012376A successfully refreshed from Google Patents.
US3012376A
Expired / Lapsed
US
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Roof coping
Assignee: Phillips Petroleum Co
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Filing: 1958-02-13
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Granted: 1961-12-12
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Expires: 1978-02-13
Abstract
No abstract record available.
Inventors
- 👤 Cyril A Reddy
- 👤 Clarence P Holt
- 👤 James M Shaffer
- 👤 Clarence F Reinhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:27
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/15; E04D13/155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US435906A
Cited
US1327770A
Cited
US1354867A
Cited
US1394403A
Cited
US2812559A
Cited
US2857861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |