US3453789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Partition wall construction
Assignee: CARL R STEPHENSON
•
Filing: 1965-09-01
•
Granted: 1969-07-08
•
Expires: 1985-09-01
Abstract
No abstract record available.
Inventors
- 👤 Carl R Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:28
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/82; E04B2/821; E04B2/822
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2443548A
Cited
CH329647A
Cited
US3003810A
Cited
US2969565A
Cited
FR70624E
Cited
FR1178632A
Cited
GB853216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |