Patent US2577483A successfully refreshed from Google Patents.
US1687581A
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Assignee: Individual
•
Filing: 1927-11-04
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Granted: 1928-10-16
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Expires: 1947-11-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:34
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/02; G03D13/08; G03D13/10; Y; Y10; Y10T; Y10T24/00; Y10T24/34; Y10T24/3427; Y10T24/3428; Y10T24/3449; Y10T24/3453; Y10T24/3455; Y10T24/44; Y10T24/44291; Y10T24/44547; Y10T24/46; Y10T24/4604; Y10T24/463
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) | 1931-10-16 | 1932-04-16 | 1932-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-10-16 | 1936-04-16 | 1936-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-10-16 | 1940-04-16 | 1940-10-16 | $7700.00 | Window Closed / Lapsed |