Patent US2042385A successfully refreshed from Google Patents.
Patent US1776280A successfully refreshed from Google Patents.
US1776280A
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Assignee: Individual
•
Filing: 1927-11-19
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Granted: 1930-09-23
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Expires: 1947-11-19
Abstract
No abstract record available.
Inventors
- 👤 John M Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:05
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/042; E21B17/043; F; F16; F16B; F16B2200/00; F16B2200/69; F16B2200/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-09-22 | 1934-03-24 | 1934-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-09-22 | 1938-03-24 | 1938-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-09-22 | 1942-03-24 | 1942-09-23 | $7700.00 | Window Closed / Lapsed |