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US1426338A
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Assignee: Individual
•
Filing: 1917-07-09
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Granted: 1922-08-15
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Expires: 1937-07-09
Abstract
No abstract record available.
Inventors
- 👤 Elmer A Sperry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:44
CPC Classifications
B; B64; B64D; B64D1/00; B64D1/16; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/4336; Y10T137/8593; Y10T137/87917; Y10T137/87981
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) | 1925-08-14 | 1926-02-13 | 1926-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-08-14 | 1930-02-13 | 1930-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-08-14 | 1934-02-13 | 1934-08-15 | $7700.00 | Window Closed / Lapsed |