Patent US3104689A successfully refreshed from Google Patents.
US3104689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Router guide for steps and shelves
Assignee: Individual
•
Filing: 1961-04-13
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Granted: 1963-09-24
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Expires: 1981-04-13
Abstract
No abstract record available.
Inventors
- 👤 Iver L Piper
- 👤 David E Piper
- 👤 Frank N Piper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:31
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/26; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7684; Y10T83/7693; Y10T83/7697
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A MANUALLY SUPPORTABLE, PORTABLE ROUTER GUIDE COMPRISING AN ELONGATED BAR HAVING A STRAIGHT EDGE HAVING GRADUATIONS THEREON, AN INDICATOR ARM ATTACHED TO SAID BAR, A HEAD HAVING A SUBSTANTIALLY SEMI-CIRCULAR EDGE, SAID HEAD BEING DISPOSED ON THE UPPER SIDE OF SAID BAR AND SAID EDGE HAVING SEMI-CIRCULARLY ARRANGED GRADUATIONS THEREON, MEANS PIVOTALLY ATTACHING SAID HEAD TO SAID BAR AT THE CENTER OF THE CIRCLE OF WHICH SAID SEMI-CIRCLE IS A PART, SAID INDICATOR ARM HAVING AN INDICATOR MEANS THEREON COOPERATIVE WITH SAID GRADUATIONS AND DISPOSED ON A LINE AT A RIGHT ANGLE TO SAID STRAIGHT EDGE OF SAID BAR, SAID SEMI-CIRCULARLY ARRANGED GRADUATIONS BEING POSITIONED FOR COOPERATION WITH SAID INDICATOR MEANS, SPACED PARALLEL ARMS EXTENDED FROM THE HEAD, MEANS MOUNTING SAID ARMS ON SAID HEAD IN A MANNER FOR MOVEMENT OF SAID ARMS TOWARD AND AWAY FROM EACH OTHER AND FOR MAINTAINING SAID ARMS PARALLEL AT ALL TIMES, AND MEANS OPERABLY CORRELATED WITH SAID ARMS FOR MAINTAINING SAID ARMS IN SELECTED POSITIONS OF SPACING.
Claim 2
Dependent Claim
164 words
A MANUALLY SUPPORTABLE, PORTABLE ROUTER GUIDE COMPRISING AN ELONGATED BAR HAVING A STRAIGHT EDGE HAVING GRADUATIONS THEREON, AN INDICATOR ARM ATTACHED TO SAID BAR, A HEAD HAVING A SUBSTANTIALLY SEMI-CIRCULAR EDGE, SAID HEAD BEING DISPOSED ON THE UPPER SIDE OF SAID BAR AND SAID EDGE HAVING SEMI-CIRCULARLY ARRANGED GRADUATIONS THEREON, MEANS PIVOTALLY ATTACHING SAID HEAD TO SAID BAR AT THE CENTER OF THE CIRCLE OF WHICH SAID SEMI-CIRCLE IS A PART, SAID INDICATOR ARM HAVING AN INDICATOR MEANS THEREON COOPERATIVE WITH SAID GRADUATIONS AND DISPOSED ON A LINE AT A RIGHT ANGLE TO SAID STRAIGHT EDGE OF SAID BAR, SAID SEMI-CIRCULARLY ARRANGED GRADUATIONS BEING POSITIONED FOR COOPERATION WITH SAID INDICATOR MEANS, SPACED PARALLEL ARMS EXTENDED FROM THE HEAD, MEANS MOUNTING SAID ARMS ON SAID HEAD IN A MANNER FOR MOVEMENT OF SAID ARMS TOWARD AND AWAY FROM EACH OTHER AND FOR MAINTAINING SAID ARMS PARALLEL AT ALL TIMES, AND MEANS OPERABLY CORRELATED WITH SAID ARMS FOR MAINTAINING SAID ARMS IN SELECTED POSITIONS OF SPACING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |