US3481635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal roof bracket
Assignee: INTERN ENTERPRISES Inc
•
Filing: 1968-04-03
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Granted: 1969-12-02
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Expires: 1988-04-03
Abstract
No abstract record available.
Inventors
- 👤 Charles W Tracy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:37
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/02; E04B7/06; E04B7/063; E04B1/00; E04B1/18; E04B1/26; E04B1/2604; E04B1/2608; F; F16; F16B; F16B9/00; F16B9/05; F16B9/058; F16B2200/00; F16B2200/50; F16B2200/503
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1036439A
Cited
US1657243A
Cited
US2840014A
Cited
US2990590A
Cited
US3184800A
Cited
US3333875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |