Patent US1505220A successfully refreshed from Google Patents.
US1505220A
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Assignee: CHICAGO APPARATUS Co
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Filing: 1923-10-13
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Granted: 1924-08-19
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Expires: 1943-10-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Shay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:57
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/04; F16B7/044; F16B7/048; F16B7/0493; F16B2/00; F16B2/20; F16B2/22; F16B2/24; F16B2/241; F16B2/245; F16B2/246; Y; Y10; Y10S; Y10S403/00; Y10S403/03; Y10S411/00; Y10S411/918; Y10T; Y10T24/00; Y10T24/46; Y10T24/4604; Y10T24/4605; Y10T24/4609; Y10T24/4621; Y10T24/4625; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/60
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) | 1927-08-19 | 1928-02-18 | 1928-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-08-19 | 1932-02-18 | 1932-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-08-19 | 1936-02-18 | 1936-08-19 | $7700.00 | Window Closed / Lapsed |