US3311983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring tape
Assignee: Individual
•
Filing: 1964-03-02
•
Granted: 1967-04-04
•
Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Charles C Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:05
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/04; E21B47/047; Y; Y10; Y10S; Y10S174/00; Y10S174/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1497178A
Cited
US1498960A
Cited
US2275474A
Cited
US2593252A
Cited
US2715653A
Cited
US2997878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |