US3449884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing suspension roofs
Assignee: US Industries Inc
•
Filing: 1967-02-08
•
Granted: 1969-06-17
•
Expires: 1987-02-08
Abstract
No abstract record available.
Inventors
- 👤 William E Joor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:35
CPC Classifications
E; E04; E04H; E04H7/00; E04H7/02; E04H7/04; E04H7/06; E04H7/065; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1800015A
Cited
US2812574A
Cited
US2804028A
Cited
US3001273A
Cited
US3153302A
Cited
US3153303A
Cited
US3092216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |