US3494089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam construction for buildings
Assignee: HAROLD W DICKINSON
•
Filing: 1968-06-05
•
Granted: 1970-02-10
•
Expires: 1988-06-05
Abstract
No abstract record available.
Inventors
- 👤 Harold W Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:53
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/38; E04C3/42; E04C3/02; E04C3/12; E04C3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191411140A
Cited
FR896320A
Cited
GB782900A
Cited
US3039152A
Cited
US3229333A
Cited
US3263381A
Cited
US3346999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |