Patent US2770808A successfully refreshed from Google Patents.
Patent US2662772A successfully refreshed from Google Patents.
← Back to Patent Explorer
US2662772A Expired / Lapsed US ⏱️ 0.0 years remaining

Automatic record changer for various record sizes

Assignee: MILWAUKEE STAMPING Co
•
Filing: 1949-07-20
•
Granted: 1953-12-15
•
Expires: 1969-07-20
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Daniel T Dobrogowski
  • 👤 Ralph M Roen
  • 👤 Robert H Jones

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 19:56
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/08; G11B17/12; G11B17/16; G11B17/162; G11B17/165

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

US2063199A Cited
US2271001A Cited
US2270179A Cited
US2352331A Cited
US2330293A Cited
US2390862A Cited
US2376741A Cited
US2490678A Cited
GB572688A Cited
US2394539A Cited
US2488260A Cited
US2568496A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1956-12-14 1957-06-15 1957-12-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1960-12-14 1961-06-15 1961-12-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1964-12-14 1965-06-15 1965-12-15 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag