US3490187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building component
Assignee: FRED H STAUFFER
•
Filing: 1967-05-23
•
Granted: 1970-01-20
•
Expires: 1987-05-23
Abstract
No abstract record available.
Inventors
- 👤 Harry K Stauffer
- 👤 Fred H Stauffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:07
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04B; E04B2/00; E04B2/02; E04B2/28; E04B2/30; E04B2002/0202; E04B2002/0243; E04B2002/0247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1391316A
Cited
US1953287A
Cited
US2011529A
Cited
GB553989A
Cited
US2341757A
Cited
US2837788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |