US1784142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material strip for spring-tooth lock washers
Assignee: SHAKEPROOF LOCK WASHER CO
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Filing: 1928-12-15
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Granted: 1930-12-09
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Expires: 1948-12-15
Abstract
No abstract record available.
Inventors
- 👤 Richard T Hosking
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:07
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/18; B21D51/20; Y; Y10; Y10S; Y10S29/00; Y10S29/04; Y10S411/00; Y10S411/955; Y10S411/956; Y10S411/957; Y10S411/958; Y10T; Y10T428/00; Y10T428/12; Y10T428/12306; Y10T428/12313; Y10T428/12361; Y10T428/12368; Y10T428/12375; Y10T428/12389; Y10T428/12403; Y10T428/12465; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/12951; Y10T428/12972
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) | 1933-12-08 | 1934-06-09 | 1934-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-12-08 | 1938-06-09 | 1938-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-12-08 | 1942-06-09 | 1942-12-09 | $7700.00 | Window Closed / Lapsed |