US2677954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for keys
Assignee: Individual
•
Filing: 1950-09-26
•
Granted: 1954-05-11
•
Expires: 1970-09-26
Abstract
No abstract record available.
Inventors
- 👤 Richard G Howell
- 👤 Emerson E Hawley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:17
CPC Classifications
A; A45; A45C; A45C11/00; A45C11/32; A45C11/323; Y; Y10; Y10T; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8676; Y10T70/8784
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US505882A
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US699523A
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US1061393A
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GB110282A
Cited
US1404736A
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US1403087A
Cited
US1549244A
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US1526498A
Cited
US1691608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |