Patent US5668056A successfully refreshed from Google Patents.
US3307387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for perforating and corrugating metallic ribbon
Assignee: Rohr Inc
•
Filing: 1963-12-11
•
Granted: 1967-03-07
•
Expires: 1983-12-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Elbert M Lacey
- 👤 William F Rethwish
- 👤 Dale S Harding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:27
CPC Classifications
B; B21; B21D; B21D13/00; B21D13/02; B21D31/00; B21D31/02; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/215; Y10T83/2155; Y10T83/2157; Y10T83/929; Y10T83/9314
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
THE METHOD OF PERFORATING AND CORRUGATING METALLIC RIBBON TO FORM SUBSTANTIALLY V-SHAPED PERFORATED CORRUGATIONS THEREIN HAVING NODAL PORTIONS AT THE CRESTS AND VALLEYS WHICH COMPRISES THE STEPS OF PIERCING THE RIBBON, AND CONCURRENTLY CORRUGATING EYELETING AND COINING THE PIERCED RIBBON SO THAT THE PROTUBERANCES RESULTING
Claim 2
Independent Claim
45 words
THE METHOD OF PERFORATING AND CORRUGATING METALLIC RIBBON TO FORM SUBSTANTIALLY V-SHAPED PERFORATED CORRUGATIONS THEREIN HAVING NODAL PORTIONS AT THE CRESTS AND VALLEYS WHICH COMPRISES THE STEPS OF PIERCING THE RIBBON, AND CONCURRENTLY CORRUGATING EYELETING AND COINING THE PIERCED RIBBON SO THAT THE PROTUBERANCES RESULTING
References Cited (Backward Citations)
GB544879A
Cited
US1573810A
Cited
FR759641A
Cited
US2413179A
Cited
US2494018A
Cited
US2403035A
Cited
US2699211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |