US2949763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall facing
Assignee: Individual
•
Filing: 1956-05-18
•
Granted: 1960-08-23
•
Expires: 1976-05-18
Abstract
No abstract record available.
Inventors
- 👤 John L Felder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:59
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0832; E04F13/0833; E04F13/0846
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US982015A
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US1912972A
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US2088625A
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US2073795A
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US2073130A
Cited
US2101612A
Cited
US2201129A
Cited
US2379179A
Cited
GB584202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |