Patent US1990524A successfully refreshed from Google Patents.
Patent US1742094A successfully refreshed from Google Patents.
US1742094A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1928-03-01
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Granted: 1929-12-31
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Expires: 1948-03-01
Abstract
No abstract record available.
Inventors
- 👤 Perks Charles
- 👤 Shields Charles Ernest
- 👤 Murray Thomas Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:33
CPC Classifications
E; E04; E04F; E04F10/00; E04F10/02; E04F10/06; E04F10/0611; E04F10/0614; E04F10/0625; E04F10/0644; E04F10/0648; E06; E06B; E06B9/00; E06B9/56; E06B9/68; E06B9/72; E04F10/0685; Y; Y10; Y10S; Y10S160/00; Y10S160/04; Y10S160/904; Y10S160/911
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) | 1932-12-30 | 1933-07-01 | 1933-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-12-30 | 1937-07-01 | 1937-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-12-30 | 1941-07-01 | 1941-12-31 | $7700.00 | Window Closed / Lapsed |