Patent US3513608A successfully refreshed from Google Patents.
US3513608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curvilinear prefabricated building with conical roof
Assignee: Individual
•
Filing: 1968-11-20
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Granted: 1970-05-26
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Expires: 1988-11-20
Abstract
No abstract record available.
Inventors
- 👤 Walter Nagrod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:45
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/02; E04B7/028; E04B1/00; E04B1/32; E04B2001/3235; E04B2001/3241; E04B2001/3252; E04B2001/327; E04B2001/3276; E04B2001/3288
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR733589A
Cited
US2664177A
Cited
GB664405A
Cited
US2705349A
Cited
FR1215175A
Cited
US3137097A
Cited
US3254462A
Cited
US3199258A
Cited
US3255560A
Cited
US3386220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |