US3390856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustical inverted t beam hanger
Assignee: United Carr Inc
•
Filing: 1966-06-10
•
Granted: 1968-07-02
•
Expires: 1986-06-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold S Van Buren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:13
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/12; E04B9/16; E04B9/18; F; F16; F16B; F16B2/00; F16B2/02; F16B2/06; F16B2/065; F16B2/20; F16B2/22; F16B2/24; F16B2/241; F16B2/245; F16B5/00; F16B7/00; F16B7/04; F16B7/044; F16B7/048; F16B7/0493; F16B2200/00; F16B2200/50; F16B2200/509
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US540693A
Cited
US2485090A
Cited
US2839671A
Cited
US3131447A
Cited
US3253308A
Cited
US3329387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |