Patent US3026780A successfully refreshed from Google Patents.
US3026780A
Expired / Lapsed
US
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Roofing machine
Assignee: Individual
•
Filing: 1958-09-02
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Granted: 1962-03-27
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Expires: 1978-09-02
Abstract
No abstract record available.
Inventors
- 👤 Roy H Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:36
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/21; E04; E04D; E04D15/00; E04D15/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1632509A
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US1763290A
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US1892566A
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US2015695A
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US2199649A
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US2197878A
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US2241863A
Cited
US2777700A
Cited
US2665144A
Cited
DE1017199B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |