US3529731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe handling apparatus
Assignee: Individual
•
Filing: 1968-09-27
•
Granted: 1970-09-22
•
Expires: 1988-09-27
Abstract
No abstract record available.
Inventors
- 👤 Charles Penny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:07
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/024; F16L1/06; F16L1/09; B; B66; B66C; B66C1/00; B66C1/10; B66C1/42; B66C1/422; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5367
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |