Patent US2093722A successfully refreshed from Google Patents.
US2093722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shingle
Assignee: Individual
•
Filing: 1937-05-03
•
Granted: 1937-09-21
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Expires: 1957-05-03
Abstract
No abstract record available.
Inventors
- 👤 Roy C Harrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:34
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/12; E04D1/125; E04D1/18; E04D1/29; E04D1/2907; E04D1/2914; E04D1/2918; E04D1/2928; E04D1/2935; E04D1/2942
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) | 1940-09-20 | 1941-03-22 | 1941-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-09-20 | 1945-03-22 | 1945-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-09-20 | 1949-03-22 | 1949-09-21 | $7700.00 | Window Closed / Lapsed |