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US691994A
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Assignee: GEORGE H CHRIST
•
Filing: 1901-07-11
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Granted: 1902-01-28
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Expires: 1921-07-11
Abstract
No abstract record available.
Inventors
- 👤 Frank I Webber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:24
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/08; E21B43/088; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49602
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) | 1905-01-27 | 1905-07-29 | 1906-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-01-27 | 1909-07-29 | 1910-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-01-27 | 1913-07-29 | 1914-01-28 | $7700.00 | Window Closed / Lapsed |