Patent US2018155A successfully refreshed from Google Patents.
US2018155A
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Assignee: Individual
•
Filing: 1931-10-26
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Granted: 1935-10-22
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Expires: 1951-10-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas B Shanahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:57
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/04; F21S; F21S41/00; F21S41/40; F21S41/47; F21V7/00; F21V7/04; F21V7/09
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) | 1938-10-21 | 1939-04-22 | 1939-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-21 | 1943-04-22 | 1943-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-21 | 1947-04-22 | 1947-10-22 | $7700.00 | Window Closed / Lapsed |