Patent US2884038A successfully refreshed from Google Patents.
US2884038A
Expired / Lapsed
US
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Bolt head having undercut portion to receive flowable lead washer
Assignee: Individual
•
Filing: 1955-01-19
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Granted: 1959-04-28
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Expires: 1975-01-19
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Payne
- 👤 De Wayne M Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:06
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/34; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/93; Y10S411/955; Y10S411/965; Y10S411/969; Y10S411/974; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934; Y10T29/49938
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US472489A
Cited
DE483177C
Cited
GB190100131A
Cited
FR608067A
Cited
US1956021A
Cited
US2001290A
Cited
US2463378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |