US3485321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work tower
Assignee: SMITH RAYMOND E JUN
•
Filing: 1967-11-20
•
Granted: 1969-12-23
•
Expires: 1987-11-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Smith Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:40
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/18; E04G1/22; B; B66; B66F; B66F11/00; B66F11/04; B66F11/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2843430A
Cited
US1577989A
Cited
US2656942A
Cited
US2935218A
Cited
US3015497A
Cited
US3283831A
Cited
US3259369A
Cited
US3411646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |