US2930200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable apparatus for supporting off shore drilling equipment
Assignee: BEULAH PERKINS
•
Filing: 1955-12-12
•
Granted: 1960-03-29
•
Expires: 1975-12-12
Abstract
No abstract record available.
Inventors
- 👤 Perkins Starling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:53
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/04; E02B17/08; E02B17/0836; E02B17/0863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US103899A
Cited
US2675681A
Cited
US2540679A
Cited
US2603068A
Cited
US2589146A
Cited
US2771747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |