US2859840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Post and support
Assignee: Individual
•
Filing: 1953-01-27
•
Granted: 1958-11-11
•
Expires: 1973-01-27
Abstract
No abstract record available.
Inventors
- 👤 Karl S Fantle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 22:47
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/32; E01; E01F; E01F9/00; E01F9/60; E01F9/658; E01F9/673; E01F9/677
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US866105A
Cited
US849054A
Cited
US993121A
Cited
GB191327731A
Cited
US1799314A
Cited
US1916787A
Cited
US2491629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |