US1494964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller
Assignee: AT&T Inc
•
Filing: 1919-05-17
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Granted: 1924-05-20
•
Expires: 1939-05-17
Abstract
No abstract record available.
Inventors
- 👤 Hugh M Stoller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:12
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/16; F; F03; F03D; F03D1/00; F03D1/06; F03D1/065; F05; F05B; F05B2240/00; F05B2240/20; F05B2240/30; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72
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) | 1927-05-20 | 1927-11-19 | 1928-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-05-20 | 1931-11-19 | 1932-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-05-20 | 1935-11-19 | 1936-05-20 | $7700.00 | Window Closed / Lapsed |