US3030670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling construction
Assignee: Riley Power Inc
•
Filing: 1958-07-15
•
Granted: 1962-04-24
•
Expires: 1978-07-15
Abstract
No abstract record available.
Inventors
- 👤 Donald W Bigelow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:13
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/32; E04B9/22; E04B9/24; E04B9/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734446A
Cited
US1864965A
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US2121432A
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US2270268A
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US2485090A
Cited
US2676679A
Cited
US2659807A
Cited
US2822584A
Cited
US2866233A
Cited
US2939543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |