Patent US2978353A successfully refreshed from Google Patents.
US2978353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety tools
Assignee: Individual
•
Filing: 1956-09-27
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Granted: 1961-04-04
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Expires: 1976-09-27
Abstract
No abstract record available.
Inventors
- 👤 Walter R Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:54
CPC Classifications
B; B25; B25G; B25G1/00; B25G1/10; B25G1/105; B25B; B25B13/00; B25B13/02; B25B13/08; E; E21; E21D; E21D15/00; E21D15/005; E21D15/007; F; F42; F42B; F42B33/00; F42B33/06; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/937; Y10S81/00; Y10S81/90; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12139; Y10T428/12389; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
IN A SPARK-PROOF HAND TOOL OF THE CHARACTER DESCRIBED, AN INNER FRAME OF STEEL DEFINING THE BASIC SHAPE AND LOCATION OF THE WORK-ENGAGING SURFACES OF THE TOOL AND A NON-SPARKING COATING OVER THE ENTIRE SURFACE OF SAID TOOL, SAID COATING ON THE WORK-ENGAGING SURFACES OF THE TOOL CONSISTING ESSENTIALLY OF A NICKEL-CHROMIUM-BORON ALLOY INTEGRALLY UNITED WITH SAID INTERNAL SURFACES AND SAID COATING ON THE NON-WORK-ENGAGING SURFACES CONSISTING ESSENTIALLY OF A SNYTHETIC RESIN INTEGRALLY UNITED WITH SAID SURFACES, THE THICKNESS OF SAID COATING OVER SAID WORKENGAGING SURFACE BEING APPROXIMATELY 1/64 OF AN INCH.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |