US3237657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid winding apparatus
Assignee: US Philips Corp
•
Filing: 1963-02-19
•
Granted: 1966-03-01
•
Expires: 1983-02-19
Abstract
No abstract record available.
Inventors
- 👤 Elvers Ernst Gunter
- 👤 Hirsch Kurt
- 👤 Zywietz Christoph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:16
CPC Classifications
H; H01; H01J; H01J19/00; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
APPARATUS FOR WINDING ELECTRON TUBE GRIDS AND THE LIKE COMPRISING; MEANS FOR ROTATABLY SUPPORTING A GRID FRAME MEMBER, A SYNCHRONOUS MOTOR FOR DRIVING SAID FIRST MENTIONED MEANS, ROTATABLE MEANS FOR GUIDING WIRE TO BE WOUND ON SAID GRID FRAME, A SYNCHRONOUS MOTOR FOR DRIVING SAID ROTATABLE MEANS, FREQUENCY GENERATOR MEANS FOR SIMULTANEOUSLY PRODUCING ALL FREQUENCIES REQUIRED FOR
Claim 2
Dependent Claim
57 words
APPARATUS FOR WINDING ELECTRON TUBE GRIDS AND THE LIKE COMPRISING; MEANS FOR ROTATABLY SUPPORTING A GRID FRAME MEMBER, A SYNCHRONOUS MOTOR FOR DRIVING SAID FIRST MENTIONED MEANS, ROTATABLE MEANS FOR GUIDING WIRE TO BE WOUND ON SAID GRID FRAME, A SYNCHRONOUS MOTOR FOR DRIVING SAID ROTATABLE MEANS, FREQUENCY GENERATOR MEANS FOR SIMULTANEOUSLY PRODUCING ALL FREQUENCIES REQUIRED FOR
References Cited (Backward Citations)
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |