Patent US4999768A successfully refreshed from Google Patents.
Patent US3093935A successfully refreshed from Google Patents.
US3093935A
Expired / Lapsed
US
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Roof forming structure
Assignee: Individual
•
Filing: 1959-11-27
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Granted: 1963-06-18
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Expires: 1979-11-27
Abstract
No abstract record available.
Inventors
- 👤 Harold S Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:00
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; E; E04; E04B; E04B7/00; E04B7/20; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/11; E04D; E04D3/00; E04D3/35; E04D3/351; E04D3/355; E04D3/358; E04D3/36; E04C2003/0404; E04C2003/0408; E04C2003/0421; E04C2003/0426; E04C2003/0434; E04C2003/0443; E04C2003/0452; E04C2003/0473; E04C2003/0486; E04C2003/0491; Y; Y10; Y10T; Y10T428/00; Y10T428/19; Y10T428/192; Y10T428/195
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1817619A
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US1931750A
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US2021577A
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US2073278A
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US2433728A
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US2576073A
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US2642818A
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US2896271A
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US2874652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |